Warning: Marked and Unmarked spoilers ahead. Read at your own discretion.
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Harry is given the option at King's Cross of dying. While this would have been sad if he would have taken this route, things were still set up for Voldemort's defeat anyway. Harry would have been proven actually dead by Bellatrix, Hagrid still would have carried really-dead Harry back - but nothing that happens would have stood in the way of Neville destroying Nagini - the final Horcrux - and thus someone being able to take out Voldemort (though probably at the risk of even more casualties), even on the off chance Harry's death had made Voldemort the master of the Elder Wand.
Considering Harry still would have sacrificed himself for them Voldemort's enemies still would have been protected from his magic and he'd be trapped on Hogwarts grounds, his minions beaten and surrounded by everyone who wants him dead without any Horcruxes to save him. Voldemort was pretty much dead the moment Harry decided to go to him.
Of course Voldemort never noticed the resurrection stone had special properties - even if he turned the stone three times to activate it, Voldemort had no departed loved ones to appear.
Once again, it was a mother's love that saved Harry from Voldemort.
More so in the movie, during the battle Voldemort starts hitting and kicking Harry. He's tried killing him so many times with magic with each one failing, so out of options, he tries to beat him to death.
Ginny is the most logical person for Harry to marry. A somewhat important subplot in the books is Harry's relationship with the Weasleys, to the point where they might as while be his family. If Harry had married somebody else, he wouldn't be part of the Weasely family anymore, and that connection would be lost.
You have to admire Rowling's strategy when it comes to explaining Harry's rebirth - she pulls it off by creating a situation that probably had never, ever happened before in the history of wizardkind. Nobody could possibly know what would happen when one human being first made five Horcruxes THEN offering a woman to spare her if she allowed him to kill her child (which he had never done before), THEN killing that woman (placing Harry under the blood protection), THEN trying to kill that child with a curse that had never failed before, THEN having his soul spontaneously split when the spell rebounded, THEN the part of the soul that split away taking refuge into the nearest living being (Harry), THEN the still free soul possessing another man and fighting with the living vessel and being defeated, THEN using the human Horcrux's blood in a resurrection ritual, THEN trying to kill the human Horcrux again with the same spell that failed before, THEN joined with that human Horcrux through a paired-wand bond in which he was determined to be the weaker one, THEN trying to kill that human Horcrux a third time, THEN possessing him, THEN using another person's wand to try to avoid the paired-wand bond and failing as the other person's wand breaks, THEN trying to kill that human Horcrux as he attempts to do a Heroic Sacrifice to save his friends, THEN having that human Horcrux survive AGAIN, and finally trying to kill him AGAIN by using a wand that has been said many times to be unable to fight against its owner. All in all, a VERY long chain of events that are very unlikely to be repeated in the same form ever again.
The symbolism of the wands. There's the thestral tail hair in the Elder Wand. Voldemort's wand was made of Yew, the whole "death tree symbolism", but his and Harry's wands were connected by the same phoenix, the bird of rebirth - the whole "horcruxes of each other" thing, with the core being the same phoenix and all - connected, and Harry's wand was made of Holly, connected to rebirth in several mythologies, including Christianity, to mirror Voldemort's wand. Because even though they both come back, Harry's the one who ultimately lives.
Sure, it was easy enough to accept that Snape hated Neville because he was a Gryffindor, he was incompetent, and he was available, but it wasn't until some time after reading Deathly Hallows his particular hatred for Neville was due to his belief that if Neville had been the Chosen One named in the prophecy - that if Voldemort had decided to attack the Longbottoms instead of the Potters - Lily would still be alive.
On the other hand, this gives way to some Fridge Horror. Neville's parents were tortured into insanity in the canon. If it were Neville's parents who were killed by Voldemort instead, this would likely leave Harry's parents as the ones who would be tortured into insanity.
The seventh book shows Snape's hatred for Harry in a different light. Not only did Harry have his mother's eyes and look like his father (reinforcing the bond they had and the fact that Snape would never see Lily again), but he also might have been Snape's son in a different world. Hard to be friends with a kid like that.
If you read "The Prince's Tale" with the mindset of "Snape views Dumbledore as a father figure" (which, considering Snape's real father, is not that far-fetched of an assumption), it adds a whole new dimension to Snape's resentment of Harry: Snape is very much the "Well Done, Son!" Guy, constantly putting his life on the line for Dumbledore and doing everything he asks, which condemns him to a life of being hated by the entire Wizarding World when he kills Dumbledore, while Harry (in Snape's mind) will do much of the same and be worshipped by the Wizarding World, because everyone wants to see Voldemort killed. (Unfortunately, this makes Dumbledore seem pretty cold and even more manipulative than he already is, because it reads as though he deliberately took advantage of Snape's desperation for approval by a father-figure and tormented him with it.)
Given that both are Muggle-borns and teen geniuses, Snape's nasty treatment of Hermione might not be just because he's a jerkass, but also because she reminds him of Lily, and he's probably angered by her friendship with Harry (who, of course, reminds him of James Potter).
Take a good look at the prophecy lines "marked as his equal" and "has power he knows not". First, consider that Harry was a Horcrux, which meant he couldn't kill Voldemort without dying first, whereas Voldemort clearly had no such restriction... making them not necessarily equals. Secondly, due to Voldemort's obsessive belief that Harry was the chosen one, it meant that he disregarded most everyone else's abilities as irrelevant. Now look at Neville, who 1) would be free to defeat Voldemort without dying, and 2) clearly not deemed as important to Voldemort, would possess abilities which Voldemort did not know what they were. In short, up until the very end, it was still up in the air exactly whom the prophecy applied to.
In Prisoner of Azkaban, Professor Trelawney is wary of sitting at the Christmas dinner table, as it would mean that there were thirteen people there, and when thirteen sit at a table, the first to rise would be the first to die. This is played for laughs when Harry and Ron get up at the same time (although, come to think of it, Harry did die first), but in Deathly Hallows, there are thirteen people sitting down mourning Moody's death. Lupin rises first to offer to locate the body. Lupin is killed at the Battle of Hogwarts, and is the first of the thirteen to die.
In the epilogue, Harry's son is worried that he'll be in Slytherin. His name is Albus Severus Potter, making his initials A.S.P. Therefore, it would actually be quite appropriate for him to be in Slytherin.Stealth Pun?
. Snape's last words are "look at me", directed at Harry. He wants the last thing he sees to be Lily's eyes. *sniffle*
Deathly Hallows and its long stretches of the protagonists camping out while on the run. Rowling likes to borrow from somewhat obscure English popular fiction (such as the school story), and this kind of setting/plot is a lot like The 39 Steps and Rogue Male - same idea of a sinister force threatening England in a Day of the Jackboot way and camping while on the run.-
Hermione's group and Dean's group both ending up at the same random countryside place independently in the chapter The Goblin's Revenge, so that Harry can overhear the crucial story about the sword of Gryffindor, does not need to be a Contrived Coincidence. Hermione and Dean were both raised by Muggles; it could be that there is a popular Muggle camping ground nearby that they both visited separately as children, and which they thought of as a place to go because it had plenty of secluded, hard-to-be-found-in terrain nearby.
In Deathly Hallows, the subtlety of the exact moment that Harry reveals himself to be alive in the Great Hall toward the end of the battle? It was right as Molly Weasley killed Bellatrix. Then Voldemort stopped fighting McGonagall, Kingsley, and Slughorn and turned toward Molly. Of all the friends he had fighting in the battle, why stop the battle to help Molly? Consider Order of the Phoenix, where Molly tells Sirius that Harry is "as good as" a son to her. When Harry sees Molly's boggart, it is flashing through images of her dead sons... and Harry is included. And, finally, in the beginning of Deathly Hallows, the gift of the watch. Because he was powerless to do so seventeen years ago, Harry is protecting the only mother he has ever known.
Unmarked Deathly Hallows Spoilers: In the seventh book, there comes a time when Voldemort is calling for Harry to be given up, and then no one will get hurt. Pansy steps up to say Harry should be given to Voldemort, and not one of the Slytherins stands against her. Now, some people see this as a DMoS for Jo, and she could have shown that Slytherin's aren't all evil and had some stand up for Harry, etc. But — how many of the Slytherins knew where their parents were? Their family members? Their loved ones? How many Slytherins had people they cared for with Voldemort, and potentially in danger if they helped the 'good guys'? It's actually really sad for them, because they don't necessarily know if it's safe for their families if they decide to step up for Harry, so they don't, whereas the other houses don't have that same stigma attached! /End Spoilers
Plus, looking at it that way, what's the final battle ? The last attempt of a dozen of teachers and a few hundreds of student against the whole Dark Lord's army. They could very well have been thinking: 'You know what ? Go and fight them, we'll look and take notes.'
We find out in the epilogue of Deathly Hallows that Neville became the herbology professor at Hogwarts. However, Word of God stated that he served briefly as an auror. Although he proved in the books to be adept at both herbology and auror-ing, this was a bit of a strange career change to make. But it would make perfect sense if he ever found out his wife Hannah was pregnant — Neville was probably worried about being in such a high-risk profession, not out of fear for his own safety, but because he didn't want his kids to grow up without a father the way he had to.
In Deathly Hallows, Ron is disguised as a ministry worker whose wife is a Muggleborn on trial, and as we all know, Ron later marries Hermione, who is a Muggleborn. No wonder it hits him so hard; he's in love with Hermione, and this parallel just brings it right home, reminding him of how much danger she's in just because of her blood status.
There was that whole stink about Moral Dissonance regarding Dumbledore training Harry to, essentially, kill him because of his Horcrux. But think about it... when did this training start? Book 5. What happened in book 4? The resurrection ritual, where Voldemort took Harry's blood. And there was a gleam of "something like triumph" in Dumbledore's eyes when Harry told him about it. Dumbledore only began training Harry when it became clear that Voldemort had made it impossible to kill Harry without killing himself, and Harry had a chance to "go back" and survive dying!
Harry's ultimate plan for the Elder Wand was to put it back where it was, and die a natural death undefeated in order to break its power. On the surface, and given Word of God that he becomes an Auror, this seems like a bad plan. But the Elder Wand's ownership passes from one owner to the other upon the first person's defeat or murder. The opponent doesn't even need to know what they'd done, as proven by both Harry and Malfoy doing it by accident. So in the event that Harry is ever defeated, possession would go to that person, and if that person were defeated, it would go to whoever beat him, and so on and so on until the Elder Wand's power is effectively broken by the simple fact that nobody knows who's supposed to be using the thing.
So Harry and Voldemort are the opposite of each other, right? Good vs evil, compassion vs heartlessness, life and death. According to TV Tropes's character page, Voldemort is 71 in the final book. What's Harry age on the seventh book? 17!
When Dumbledore leaves Harry the sword of Gryffindor in his will, Dumbledore knew Harry couldn't get it from his will, and that Harry would remember that the imbibed sword could kill Horcruxes. By putting it in his will and not letting Harry get to it, he was able to make Harry want to get it by making him believe that it was truly his, and then with the thoughts of getting the sword filling up his mind, he would remember that one fight in the Chamber of Secrets, and then remember that he can kill Horcruxes now. When the trio was lamenting about how they weren't very close to killing the Horcruxes as they were to finding them, they actually were getting closer by aiming to get the sword! OH, DUMBLEDORE!
The deaths of Voldemort, Snape, and Harry mirror that of the brothers in "The Tale of the Three Brothers" perfectly, right down to age order: The eldest, Voldemort, died because of power. The second, Snape, died for lost love. And the youngest, Harry, greeted Death like an old friend, willing and ready.
Lily's patronus was a female deer, without the antlers. James' patronus was a deer with antlers; therefor a male deer and the natural couterpart to Lily's deer. Snape's patronus was a deer without antlers; he loved her, symbolized by the same deer Lily had, but he could not be her natural counterpart, as James was.
During the sequence where Harry travels through Snape's memories, there's a scene where Snape asks Dumbledore why he destroyed the ring before calling him, and whether he thought destroying it might stop the curse. Dumbledore just sort of halfheartedly agreed to it. But since when has Dumbledore been mistaken about magic? No, the real reason he waited to call Snape was to destroy the Horcrux! The Sword of Gryffindor can only be used when it is needed or when the wielder has proven themselves worthy of the blade, and there's no evidence that Dumbledore ever proved he had the particular type of bravery needed to wield the sword—remember, while he was certainly brave, he was never the same kind of brave as Harry, Ron, or Neville; he was a genius, never put into a situation beyond his ability to handle, and in situations that were beyond his control, he seemed accepting, rather than defiant. So he had to take the blade because he needed to destroy this source of evil before he died. If he had waited for Snape to stop the curse, the condition of "need" would no longer have applied, and he couldn't have destroyed the Horcrux!
Voldemort's talk/showdown with Neville seems overemphasied,but remember- Neville could have been the chosen one, so he's facing the man who almost marked him as his equal!
During Voldemort's death scene in Deathly Hallows Part 2, the music playing is called Lily's Theme. Why is this important? Because the greatest Dark wizard of all time, in the end, was destroyed because a twenty-two-year-old mother refused to step aside and let her child die. Lily Potter vanquished Voldemort just as much as Harry did.
When Ron is given the Deluminator by Dumbledore in his will, one could think at first it is a sort of condescending gesture towards the supposedly least successful member of the Trio. Soon, he finds the Mundane Utility of the artifact, because turning off the lights can be useful in many situations. But then Ron discovers that it can be used to find his friends. Ron supposes that it is because Dumbledore thought he would leave his friends, but Harry sets him right: it's because he knew that he would come back. Then, when you realize that Dumbledore knows very well what can happen when you make a bad choice in anger and are unable to go back on it, and gave Ron the Deluminator to make sure that he didn't find himself in the same situation Dumbledore was so many years ago.
The scene where Harry enters Voldemort's camp in the woods to allow himself to be killed. Before Harry reveals himself, Voldemort seems extremely solemn, almost disappointed, that Harry hasn't shown up, whispering "I thought he would come ... I expected him to come". The odd thing is that Voldemort has spent the last three books basically calling Harry a Dirty Coward who lets everyone sacrifice themselves for him, so why would he expect Harry to willingly walk to the slaughter, and why such disappointment? But consider how Voldemort "sees death as a shameful human weakness", something all mere humans must inevitably submit to — exactly the idea that terrifies Voldemort, which he tries to rebel against. Proving himself mightier than death is how Voldemort (described plenty of times as a classic malignant narcissist) makes himself greater than any mere human, proving that he alone stands above human weakness. So if the cowardly little boy also has the strength to resist the call of death and not go humbly to the slaughter, it means Voldemort isn't standing above anyone. His narcissism is deflated and leaves him only as human as anyone else ... Voldemort's worst fear.
The murder of the Potters and Voldemort's first downfall happened on Halloween, also known as All Hallows Eve. Deathly Hallows? "Hallows" just means something sacred or "hallowed". All Hallows' Eve is said to be the night when the veil between our world and the other is thinnest, so spirits can travel more freely - perhaps foreshadowing that the four people who had the Killing Curse turned or rebounded on them that night would all come back in their own ways ( James and Lily return in spirit form in Books Four and Seven, Harry literallycomes back, and Christ knows Voldemort can't seem to stay dead).
Saving Malfoy from The Fiendfyre in Room of Requirement. Knowing that Malfoy was a total jerk in the series, Harry's decision to save him was not convincing for Harry's goodness was not a satisfying enough reason. Then, looking past, during the Malfoy Manor, Malfoy's failure to confirm Harry Potter was technically saving Harry's life so it becomes more like I.O.U for saving Harry's life. Malfoy's incompetence as a death eater saved a crucial plot point.
It may or may not be deliberate, but at the beginning of the book George loses one ear. One part of an identical set. Then, near the end, Fred dies in battle. Again, one part of an identical set.
Voldemort's closeness with Nagini seems a little unusual, given that he's a narcisstic, sociopathic megalomaniac. But then you realize: As a Horcrux, Nagini is an extension of Voldemort. Nagini is Voldemort. Thus, when showing closeness with Nagini, Voldemort is showing closeness with... himself.
At the end of "Deathly Hallows: Part 2" what's the very last thing we, the audience hears? An unnamed and unseen child yelling, "Goodbye!" This very well could be a farewell from the filmmakers to those in the audience who started watching the series as little kids, and saw it all the way through to the very end...a piece of their childhood saying farewell at the end of a journey from one stage of life to another.
A small detail in the first film. During the scuffle with Rowle and Dolohov in the cafe, Ron is the one who angrily identifies the latter. Which Death Eater harmed Hermione the most in the Department of Mysteries back in OOTP?
It irritated many book readers that in the film version of Deathly Hallows, Voldemort is (like in the book) impacted with a rebound Killing Curse, but (unlike the book) dissolves into ashes instead of just being instantly killed and leaving a corpse. David Yates made this change because it works perfectly within the movie canon: this way, Voldemort's death mirrors that of Professor Quirrell in the first movie.
Wormtail dies by his own silver hand when he hesitates to kill Harry. All the way back in Goblet of Fire, when Voldemort gave him the silver hand to replace the one Wormtail gave up, he says to the healed Wormtail, 'May your faith never waver again.' Can't say ol' mouldy Voldy didn't warn him. -
In Deathly Hallows, when we see the trial of a muggle-born, the "justification" given is that she somehow must have "stole" her magic, and is thus not really a witch. In other words, Voldemort is running a reverse witch hunt.
In Chamber of Secrets, Harry tells Dobby "Just promise never to try and save my life again." In Deathly Hallows, Dobby dies while saving Harry's life.
Near the end of the series, Harry asked Dumbledore if the whole conversation at Kings Cross was real or just happening inside his head and Dumbledore answered, 'Of course it is happening inside your head, but why on earth should that mean that it is not real?' This not only spoke as what Harry Potter means as a story but also what it means to write a story and J.K Rowling as a long time writer finishing a series would know it better than anyone and this is the time her emotions for this message was strongest. It relates to her as Harry Potter was a world happening inside her head but just because it wasn't tangible doesn't mean it's not real. For all of us, knowing that loving the characters is indeed loving something real as fictional characters aren't the text in a story, the drawings or even any actors who play them. They are the heart put into them, that for certain is real.
No where is the final line of the last book: "The scar had not pained Harry for nineteen years. All was well." Now this seems like a happy ending, but why was Harry able to sense Voldemort? The piece of soul in him. SO that would mean that Harry is no longer a parseltongue, but it also means that he can no longer sense Voldemort. Which would mean that even if Voldemort rises again, Harry wouldn't be able to sense it.
Harry is able to cast a crucio on Amycus Carrow for spitting at McGonagall, but is unable to do more than mildly discomfit Bellatrix after she kills Sirius. Sure, he's a more powerful wizard by then and everyone has become just a little bit darker thanks to the times, but Bellatrix actually says that "righteous anger" is not enough to fuel the curse. It's natural and understandable, even justifiable (depending on your worldview) to hate and want to kill/inflict severe pain on someone who kills a beloved father-figure. Wanting to inflict that pain on someone for spitting on someone? Much darker and, well, they're called the Dark Arts for a reason.
When Harry wakes up after Voldemort's Killing Curse, he's on another version of Platform Nine and Three Quarters. Where can he go from there? Into the afterlife, or back to his life, the magical world. From the normal, actual Platform Nine and Three Quarters, he can either go to the magical world, or to the Dursleys. So, basically, Dursleys to Wizarding World like Wizarding World to Afterlife? Might be a hint how life after death in that universe looks like, or, if we go with heaven - compared to the Dursleys, the Wizarding World is heaven.
Luna helping drive off the dementor swarm during the battle becomes even more impressive when you consider that, like Harry, she would probably be particularly badly affected by them because of having witnessed her mother's death at a young age. Admittedly, she seems to have mostly come to terms with it, but that may not matter with dementors, since they seem to make you relive your worst memory as it happened.
You know how the Prophecy said that Voldemort would mark the Chosen One as his equal? And how, at Hogwarts, kids call each other by their surname unless they are friends? Well, in Deathly Hallows, when Voldemort and Harry fight in the Great Hall, Harry calls Voldemort by his surname. In essence, Harry is treating Voldemort like another student, or, in other words, an equal.
A big part of Voldemort's M.O. was to achieve immortality. He died at age 71- an average human lifespan.
An average muggle lifespan no less. Dumbledore was around 150 years old and still spry when he died, while Hagrid is 63 when we meet him.
One for the film version of Part 2: during Harry and Voldemort's final fight, they were still fighting in mid-air, via apparation - and during this, the two of them briefly merged together in the process. You may question why, because Harry is no longer connected to Voldemort or his Horcruxes... however, at the time of this, Nagini (Voldy's last Horcrux) was still alive and kicking, unlike in the book. Therefore, it's not Harry reacting to Voldemort, but the other way around; the Horcrux part of his maimed soul is trying to reclaim what it lost... problem is, it can't, because the Horcrux inside Harry was destroyed.
In Part 2, itís strange that Draco, Lucius and Narcissa Malfoy walked away from the battle, across what must've been a damage bridge instead of Disapparating, like the other Death Eaters to who fled the scene, but none of them are carrying a wand by that time. Lucius' wand was snapped when Voldemort used it against Harry in Part 1, Draco's wand was currently being wielded by Harry and Narcissa's wand was incinerated by Fiendfyre in the Room of Hidden Things. - FallenAngelII
The Snape's memorys provide a Once More with Clarity flashback to his 'worst memory' and show that its not the bullying that makes it the worst memory: It's that that is the moment that he lost Lily's friendship. The Fridge Horror? The bullying was an unremarkable everyday occurrence for him.
If Voldemort actually won, the wizarding world wouldn't be the only place in danger, considering his hatred of Muggles and half-blood types. If left unchecked he honestly may have attempted to take out everyone on the planet that wasn't in tune with what he wanted. Genocide on a mass scale.
In Deathly Hallows Part 1, Hermione finds the bloody room and Nagini inside of Bathilda. Killing with Avada Kedavra doesn't leave any blood, so what Hermione saw was likely the aftermath of Voldemort flaying Bathilda so Nagini could hide in the skin. And since nobody knew precisely when Harry was going to head to Godric's Hollow, that body could have been decomposing for months.
In The Deathly Hallows, Luna is kidnapped and kept at Malfoy Manor for months! Considering that Bellatrix and Greyback (a sadist with a history of attacking children) had took residence there, imagine what she must have been through.
When Dolores Umbridge resurfaces in Book 7, she is seen with several fully corporeal Patronuses. Now, as Book 3 stated over and over again, the basis for creating a corporeal Patronus is a fair bit of magical power combined with thinking happy thoughts. So Umbridge, being the evil Witch with a Capital B that she was (pun completely intended), got her Patronus-jollies from sentencing people to A Fate Worse Than Death. Voldemort might have been the most powerful dark wizard, but Umbridge just on the strength of her pure sadism was a villainous Badass Normal.
This could be a case of misunderstood Fridge Brilliance in disguise. Harry knocks Carrow through the air, whereupon the death eater falls unconscious. Crucio very clearly doesn't knock people unconscious, or even send them flying—just the pain. So in saying that you "really have to mean it," Harry might be acknowledging the fact that he didn't actually cast the curse successfully, and doesn't have it in him to do so, even when presented with such an obvious and available symbol of everything he hates.
The Fate of Umbridge. Harry knocks her out, extinguishing her Patronus, and leaves her, unconscious, in a room full of Dementors.
Word of God said that she ended up convicted for crimes against muggleborns and locked in Azkaban, so it should be assumed that she survived that, soul intact.
This is more of a Fridge Tear Jerker, but by the end of Deathly Hallows Andromeda Tonks has lost both her husband and her daughter in the space of a few months. Poor thing◊.
What happened to Dumbledore's sister decades before the time the story is set? We are just told that when she was a small child, too young to have any control over her magic, some muggle boys saw her doing magic and were very frightened. So they "wanted to make her feel powerless" in retaliation — Details of what they did are not given, but it left her permanently and severely psychologically damaged. Implication made even worse by how young she was.
And to add to that, Dumbledore's father was sent to Azkaban for going after those boys after they attacked her.
When you are a kid the fact that Slytherins are bad people is easy to accept. But when you grow up you realize that 25% of the school population are seen as evil by everyone else from their 11th birthday. No surprise that Voldemort had so many followers there : they probably don't have anyone else.
Moody's body must have been discovered by agents of the Ministry, as his eye turns up on Umbridge's door. He never has a funeral, however, as the Ministry doesn't want the public to know it's lost one of its most formidable Aurors. Just days later, the Ministry falls under Voldemort's control, when Mad-Eye's corpse is probably still being held in a Ministry-run morgue. We know the bad guys make use of Inferi...
Moody only had one leg. They probably wouldn't have bothered.
In the film, at the Battle of Hogwarts, there was one scene where a group of Death Eaters Zerg Rush across a bridge while shouting "DEEAATH!". Since none of them use magic, it seems really stupid. But we already know the Death Eaters use the Imperius Curse, and in the sixth book, we hear that they use it on Muggles too, since one of Prime Minister John Major's associates had to be locked up. That group that was Zerg Rushing the bridge? Those were Muggles who had been brainwashed to act as cannon fodder. They had no idea what they were doing.
Lupin was probably already dead when Tonks arrived at the battle. Aberforth mentions that he last saw him fighting Dolohov (who is revealed by Word of God to have killed him) and says that he hasn't seen him since
Which adds some horror to Tonks' death. Her discovering that her husband was dead could have given Bellatrix the perfect chance to kill her.