Batman & Captain America is a 1996 Elseworlds one-shot crossover written and illustrated by John Byrne, with coloring by Patricia Mulvihill. Batman and Captain America team up to stop Red Skull and The Joker.
- Big Bad Duumvirate: Red Skull and The Joker.
- Cameo: Easy Company appears early in the comic, fighting alongside Captain America
- Canon Welding: The ending reveals that this story takes place in the same universe as Superman & Batman: Generations. Dick Grayson, having taken over as Batman, finds Cap in ice instead of the Avengers.
- Takes place in a separate universe of the main DC and Marvel Universe, mostly putting Batman in World War II when Comic-Book Time means that the war was irrelevant to Batman stories for decades by the point it was made. It's also part of the same universe as Superman & Batman: Generations.
- Instead of The Manhattan Project, it's called "The Gotham Project".
- Era-Specific Personality: Since this takes place in the 1940s, characterisation matches the comics of the time. Batman and Captain America are both optimistic and well-adjusted, and the Joker is a straightforward crime lord with a clown motif rather than a crazed serial killer.
- Even Evil Has Standards: Joker may be a lunatic, but he's an AMERICAN lunatic. So when he learns that the Red Skull is an actual Nazi and not just acting like one as part of a gimmick, he flips his lid. He provides the current page image.
- Homage: To the idealistic Golden Age Of Comic Books.
- Joker Immunity: Neither Batman nor Captain America thinks the Joker perished — and this is after he's caught in a nuclear explosion because it's the Joker. They think the exact same thing about Red Skull as well, by the way.
- Let's You and Him Fight: Notably averted with Batman and Captain America - when they first meet, they immediately recognise each other, know they're both heroes, and set to beating up Nazis together. Bruce Wayne and Steve Rogers, on the other hand...
- Mutual Disadvantage: After the Joker turns on Red Skull, the two villains try to use their own weaponized toxins on each other to no effect. Since both Joker and Red Skull are immune to their own toxins and both Joker Venom and Red Skull's "dust of death" are remarkably similar, both characters are also immune to each other's toxins.
- My Hero Can Beat Up Your Hero: Robin and Bucky have this kind of attitude going on. They get over it after swapping heroes for a while.
- Mythology Gag: In the epilogue, Captain America is unfrozen in 1964, the same year he was revived in the real world.
- Real Person Cameo: Robert Oppenheimer appears.
- The Stations of the Canon: Captain America still ends up frozen.
- Tell Me How You Fight: Both Bruce Wayne and Steve Rogers end up having to fight one another, and are amazed by each other's abilities. This eventually leads them to realize they're superhero identities, and call a truce.