

When knights were coming into dominance as lords and warriors in Europe, a similar social and military change was taking place simultaneously in Japan.

When the Samurai is out of hit points, one of his death animations shows him stabbing himself with his sword, then dropping to the ground. Elite Samurai gain 3 damage against Eagle Warriors and gain 6 damage against Unique Units, and both gain 0.1 speed and gain 1 pierce armor. In Age of Empires II: The Conquerors, the Samurai gain 2 damage against Eagle Warriors and 5 damage against Unique Units. Their attack bonus makes them especially deadly against civilizations that rely on their unique unit towards the end of the game. Samurai are very effective against heavy infantry, with a quick, powerful attack which can safely take out other infantry with ease. The only land based unique units they aren't cost effective against are Cataphracts, War Elephant, and Teutonic Knights. However due to their bonus against unique units the samurai fares better in the late-game, when unique units play a bigger role in combat.

At first glance, Samurai appear to be weaker in combat than its equivalent swordsman from the Barracks, (the Long Swordsman in the Castle Age, and the Champion in the Imperial Age), the Japanese bonus to infantry attack speed makes them roughly equal in combat ability in general combat. Elite Samurai have better stats than normal Samurai.

Like all unique units, Samurai may be upgraded to elite versions of themselves. Samurai actively seek out the strongest among the enemy's ranks and possess an attack bonus against other unique units.
