The Composite Bowman has more hit points, attack strength, and range than the Improved Bowman. Other archery units include the Horse Archer and Elephant Archer.
Archers fire arrows at enemy villagers, military units, boats, and buildings within their range.
Researching Alchemy increases attack strength. Ballistics increases accuracy. Leather Armor, Scale Armor, and Chain Mail increase armor. Woodworking, Artisanship, and Craftsmanship increase range.