Okehazama

The Battle of Okehazama (桶狭間の戦い) is Nobunaga's infamous battle where he destroys the Imagawa army in one decisive battle. It shows the strategic workings of Nobunaga by using a very small force against the comparatively massive Imagawa army.

Samurai Warriors
In Samurai Warriors, it is a three-way battle including the Imagawa, Oda, and Tokugawa. Both latter clans fight for independence, and the player, if using Hanzō, may use the ninja path leading into the Imagawa main camp.

The battle is shown via cutscene in the second game. It returns in the Xtreme Legends expansion. In the Oda scenario, Hideyoshi leaves the field to find a path to ambush the Imagawa main camp, while Nobunaga lulls Yoshimoto into a false sense of security. Eventually, Hideyoshi reappears with some few peasants, and together they ride down a slope and attack the enemy commander. Unlike the previous version of the battle, the Tokugawa faithfully serve the Imagawa.