Attack Attribute Level Needed for "Instant" Troops
Keep in mind... as your hero increases his attack level, and training time diminishes - so will your need for multiple barracks. You will need to juggle training time, resources, and idle population!
Warriors: 432
Workers: 571
Scouts: 709
Pikeman: 790
Swordsmen: 871
Archers : 959
Calvary: 1,030
Transporters: 1,168
Cataphracts: 1,249
Ballista: 1,388
Battering Rams: 1,468
Catapults: 1,526