The Apache Cavalry play similarly to Dragoons in that they are ranged gunpowder cavalry strong against other cavalry.
Once the Apache Raider technology is researched they gain extra damage against Villagers as well, making them effective at disrupting an enemy economy or killing Villagers that stray too far. As with most cavalry they are weak against heavy infantry.
"The tribal people known by the name “Apache” inhabited the American Southwest, from at least the sixteenth century until today. “Apache” is probably derived from the Zuni word “apachu” meaning enemy.
The historic Apache were known as primarily a nomadic people who lived as hunters-gatherers. They kept few possessions and didn’t settle in one location for long. Apache life centered around a matriarchal culture, with the family its core unit.
The Apache nation consisted of several loosely-knit tribes, including the Mescaleros, Chiricahua, and Coyoteros. The warriors of these groups were famed for their bravery and cunning. The U.S. Army considered the Apache as one of their most difficult opponents during the entire period known as the Indian Wars. Even though their numbers were relatively small, the Apache proved an extremely tough and difficult foe."