Mikatagahara

The Battle of Mikatagahara (三方ヶ原の戦い, Mikatagahara no Tatakai) was a battle that pitted the Takeda clan against the Tokugawa clan that appears in both Samurai Warriors games. It is noted for being Shingen Takeda's final battle.

Samurai Warriors
In the first game of the series, Ieyasu ordered his men to hold their positions and only engage the enemy lightly. Nobushige Oyamada and his men began throwing rocks at the Tokugawa advance force, enticing them to attack. It worked; the advance for moved forward and was soon cut down, leaving a gap in the Tokugawa defense. Shingen formed his forces into a Scale Formation, and ordered his cavalry to charge the Tokugawa line. The Tokugawa held out only briefly, and were forced to retreat. Ieyasu left the Tokugawa main camp with Tadakatsu as rear guard, while Hanzo ambushed the Takeda main camp, killing Shingen. With his dying breath, he passed his will onto Yukimura, who soon ordered a discreet retreat. Yukimura then rode out, defeated Tadakatsu, and forced Ieyasu to retreat.

Quotes
"Ieyasu posseses two things that exceed his own worth: That unique helmet, and that officer Tadakatsu." -Shingen commenting on Ieyasu(SW) "Silent as the forest indeed..." -Hanzo right before killing Shingen(SW) "I suppose I could let you go... But I think you can stand to learn more about war and leadership!" -Shingen commenting on Ieyasu's retreat