A variant of Character Levels for Real-Time Strategy games; after multiple kills a single unit "levels up" and becomes more powerful. It tends to be integrated into the backstory a little by suggesting they are more experienced (hence the "veteran" designation) or received a Field Promotion to a higher rank.
As RTS games tend to focus on larger scale tactics rather than individual units the effects can vary a lot; sometimes the difference is hardly noticeable and other times they become so much better they are practically a new unit. The amount of possible level ups also varies very heavily between games. Some games even have ranks for kills without it actually changing unit stats at all. When implemented this is done to promote keeping your units alive rather than taking a We Have Reserves approach, and tends to support Videogame Caring Potential as a result.
If a character/unit is persistent over multiple missions but loses the veteran rank between missions, it can be a form of Reinventing the Wheel. If taken far enough, units end up gaining a Character Level or transforming into a Prestige Class rather than a rank (for example, an infantryman might be upgradeable to a sniper).
Can easily become a source of Unstable Equilibrium.
- Command & Conquer varies this trope quite a lot, in some of the games it isn't there or makes barely any difference, in other games keeping veterans alive can vastly increase the strength of an army.
- The first two games (Tiberian Dawn & Red Alert) did not feature any type of veterancy. Tiberian Sun was the first in the series to feature veterancy, but gaining veterancy took a lot of kills and the bonuses weren't noticeable.
- For Red Alert 2, they went to the extreme. At first veterancy there was only a minor increase in abilities, but at elite status units universally got Gradual Regeneration and far more powerful. Some top veteran units became very near One-Man Army levels of power. It also allows you to skip a step in getting units to elite status by sending an Allied Spy into an opposing Barracks or War Factory, allowing you to train infantry or build vehicles already at first veterancy.
- This was dialed down some in Generals, but veterancy could still handily make or break a battlefield clash. Most notably, US pilots gained the ability to use an Ejection Seat, allowing their veterancy to be transferred to whatever ground or air vehicle you assigned the downed pilot to (though getting them into helicopters was a little tricky). The second rank-up also added Regenerating Health, which was less useful than it sounds. Third (also last) rank-up gave units red effects for muzzle flashes and explosions and increased health and firepower to the maximum, in a few cases even giving the unit in question a new weapon (for example, Toxin Tractors got blue anthrax sprayers even without the proper global upgrade), and gave a noticable boost to the Regenerating Health, making some units very hard to kill.
- Tiberium Wars saw the veterancy system dialed down a bit more, but given that it has not fluctuated much in Red Alert 3 or Tiberium Twilight, it seems that the developers have found their desired balance.
- Also present in C&C sister saga Dune II (probably the Ur-example), where it usually adds a Healing Factor to units.
- Total Annihilation uses this but tends to be quite subtle with it. Kingdoms is more extreme with it and some units become much more powerful after some kills.
- Warzone 2100 is one of the most extreme examples. There are many ranks (although the differences are subtle). In the single-player campaign, veterans are persistent (along with everything else) and can be transferred to new vehicles if they stay alive. Keeping veterans alive throughout is almost essential to keep up with the technologically superior enemies later on in the game.
- The Battle for Middle-Earth: Both games have this mechanic. One of the possible purchased upgrades for a unit allows it to instantly jump to the second level (out of possible ten in the first game, five in the sequel).
- In StarCraft, each unit has a counter that keeps track of how many enemies it has killed, but this doesn't improve stats in any way. StarCraft II increases a unit's stated rank as it racks up kills, but again this does not improve stats and is just cosmetic.
- At one point in Starcraft II's development, a protoss unit (known variously as the Vindicator or Soul Hunter) was planned that would grow in power as it killed enemies. However, it had a lot of problems; it was difficult to communicate the mechanic to the unit's controller or other players, it was difficult to balance, and its slanted effectiveness (it was way more effective against swarms of enemies than single heavy ones, to a much greater degree than other units). This led it to be cut before the game entered open beta.
- Myth: Every time a soldier makes a kill, it gets a little more deadly, and survivors carry over to the next level. It is critical on some levels to have veterans from the previous levels.
- Some games in the Nintendo Wars series do this.
- In Advance Wars Days of Ruin, each unit can level up three times; once for each unit it defeats.
- Any troop that lives long enough to learn how to shoot straight in XCOM becomes a veteran, and you do become attached to them.
- The valor stat in Total War arguably counts, as the unit's stats and morale increase with every point. This led to the infamous "Jedi generals" in the first Medieval as their high stats, paired with the high valor typically gained by a unit getting whittled down in battle, effectively led to one-man armies.
- Halo Wars values experience to Stars that pop above a unit's health bar. These stars give a small boost to a unit's fire rate and DPS. Most units get up to three stars except for certain situations. Fully upgraded Spartans in a super-unit (Grizzly or Hawk) with full experience gives a whopping 14 stars! On Covenant leaders, their number of stars also increases their special ability's damage. A DLC game mode called Reinforcements can show the effects of an army with a lot of stars very well.
- In World in Conflict, individual units that survive long enough while killing enemy units and capturing points gain up to four levels. Leveled-up units (particularly the fourth-level "general" ones) gain considerable boosts to movement speed, rate of fire and special ability recharge times. However since World in Conflict's multiplayer largely consists of Rocket-Tag Gameplay, most ground units usually don't live long enough to be promoted very far...and even if they do, veteran units don't have increased hitpoints and are therefore just as fragile as newly bought ones. The exception to this is usually helicopters, as their high speed and mobility allows them to initiate combat on their own terms and quickly retreat if things get nasty. They're also much more likely to be able to dodge enemy off-map support powers that often obliterate scores of ground units.
- In the Civilization games, units that gain combat experience do not become more powerful, but their health bar becomes bigger, meaning they will last longer in battle. Within the game's dice roll combat system this means they get more chances to score a critical hit even against superior units.
- In Civ IV and V they do advance in level, obtaining promotions that make them stronger units.
- A curious example shows up in V's American Civil War scenario. Infantry units start out as "green" troops with a combat penalty, but after their first battle, their commanding officer comes into his own and acquires a unique bonus... or penalty. All of the possible commanders are real Civil War generals, and their effects are in reference to particular battles those generals took part in or facets of their command.
- EndWar: Units that survive enough battles become better and can be upgraded.
- In S.W.I.N.E., units gain experience from dealing damage to the enemies and can acquire "veteran", later "elite" status that improves their stats. It also changes their looks, adding more bling and kill markings while also making the unit look more used and worn-out.
- Battle for Wesnoth has this feature in the extreme; although it is not an RPG, every unit can gain 1 to 3 levels, each one entailing a transformation into a new unit class. The effects vary from a simple increase in power, to the addition of new abilities, to a complete transformation of the unit's role. Building up veteran armies is critical in campaigns, and even in multiplayer games (which are much shorter), managing your xp well to gain level-ups can significantly impact a game.
- Earth 2150 and Moon Project feature a veterancy system that slowly improves a unit's capabilities over time rather than having predefined veterancy levels. The bonus effects can be improved by adding a flag or banner to a nearby unit. This can make a substantial late game difference, especially since a meticulous player can carry the same units from mission to mission. It's also very clearly stated in every campaign's into briefings that keeping ranked units alive is a worthwhile investment - though that doesn't work in the original game's campaign of the Eurasian Dynasty, mainly due to very bad balancing and the AI having far stronger weapons than the player for much of it. In Moon Project and Lost Souls, it works for everyone, however.
- Company of Heroes has a lot of variations on this: all four factions implement veterancy differently. Armored units visibly gain upgrades like sandbagged protection or extra armor plates welded on. The Americans have the usual combat experience scheme wherein killing enemy units gains them ranks. The Panzer Elite have something similar, only instead of gaining general stats they have the option to raise their offensive or defensive statistics. Most British units don't gain veterancy directly: instead, Officer units gain experience from units in their aura's kills, and the units in an aura around the Officers benefit (the Officer units themselves are very poor combatants). The Wehrmacht don't gain veterancy through the normal way at all; instead they purchase veterancy which is then applied to all new and existing units...basically it's more akin to universal unit upgrades than unit veterancy.
- Within the American campaign, the player has the option of building units leveled up in previous missions through special tabs in each structure's production menu. This includes any special weapons they had picked up (light machine guns or rocket launchers).
- The sequel much more standardized the system of acquiring experience. For all factions, it is gained from kills, 75% of the value of damaging enemies and 25% of the value of damage taken. A very small minority of units cannot gain experience at all.
- A few of the Western Front Armies expansions' factions have a few twists for the veterancy system - United States Forces officer units also gain a percentage of the experience gained from units around them and their vehicles' have a crew mechanic, making experience gained from the vehicle to directly be given to the crew inside of it, the vehicle's experience being based off the crew inside of it, and the crew may be changed around between vehicles; while the Oberkommando West has two more levels of veterancy their units can get up to and benefit from, to a total of five levels.
- A few commanders also have ways of getting experienced units faster - the Wehrmacht's Elite Troops commander can buy a large amount of experience (usually maxing out infantry units, while doing much less for the higher experience-required vehicles) for a manpower and fuel cost for a single unit with a cooldown and buy one Tiger Ace already at full veterancy (getting a Tiger tank to that veterancy is otherwise extremely difficult and unlikely) and an additional bonus to sight range and coaxial machine-gun effectiveness with the drawback of it greatly reducing your income while it is deployed, and the United States Forces' Rifle Company commander may buy Riflemen units with a higher manpower cost to come with a large amount of experience (First level at least attained, and possibly almost at the second) that has a particularly high cooldown.
- In Pharaoh your military units start as "Green" and gain experience and levels the more they fight, becoming more deadly and resilient. In some scenarios it's vital that you level-up your units as you can only field six regiments since the enemy comes in overwhelming odds and some units such as war chariots literally stomp normal units. "Green" units can also become "Regular" if they go through your war academy.
- In Warhammer: Dark Omen the regiments gain experience levels and become better warriors and wiser wizards by slaying foes.
- Same goes for Black & White 2's army groups. Archer platoons, infantry platoons, and siege engines will gain experience as they defeat the other side's units, and will increase in damage and resilience. After a couple levels, archers and siege engines start to shoot flaming projectiles.
- Player units and enemy units in BattleZone II will rank-up after each kill, becoming more accurate and reacting faster. However, there is no indication of what the rank of a unit is without using the game's editor.
- Warlords Battlecry has every unit getting experience for defeating enemies. However, any levels beyond the first ones tend to need ridiculous amounts of exp (well in the thousands in the third game), but you can take some units with you into other maps during campaigns, to ameliorate that. Plus, it tends to pay off; a high level anything is ridiculously deadly.
- In Nectaris, units' stats improve as they acquire stars for battle experience, finally attaining their full potential when they have one large star.
- Hearts Of Iron IV has veterancy levels for both units and commanders.
- Unit veterancy has 5 levelsnote providing varying degrees of buffs to attack and defense, and can be increased through both combat and, if the unit is "Green" or "Trained", through field exercises. Notably, unit veterancy can also decrease due to casualties/replacement troops or changing the structure of the unit, and units at the "Green" veterancy level actually receive a debuff.note
- Commanders also gain skill levels when units in their armies engage in combat, with the addition that extended combat in certain conditions, such as using a specific unit type or fighting in certain kinds of terrain or weather, will grant the commander new condition-specific bonuses.
- Unlike ground and naval units, air wings do not gain veterancy. However, extended operations may result in the generation of an Ace Pilot, which confers bonuses on the air wing to which they are assigned. Aces can be reassigned to other air units with similar aircraft and/or mission types.
- Star Fleet Battles supplement J1 Fighters: Pilots started out at Green quality and gain points for certain accomplishments, including destroying enemy ships. A pilot with 10 points becomes Good, and one with 50 points is an Ace. Each higher rank gives bonuses in combat.
- Traveller Classic supplement Book 4 Mercenary: Military personnel gain experience points for various events, such as passing basic training, number of terms served, being decorated and coming under fire during a mission. A character's morale rating is equal to his number of experience points.
- In Chess, a pawn can be promoted to become any other piece other than a king if it reaches the other end of the board.
- Similarly, Shōgi has a rule where a piece can be promoted by being moved to the farthest three rows on the board, upgrading it such that it almost becomes a new piece. As some variants of Shogi predate chess (which has a somewhat similar rule), it is likely the Trope Maker (with Command & Conquer as the Trope Codifier for games).