Barracks in Evony Age 2 are used for troop training in this game. The level of a barrack decides the number of queues allowed in each of them and also limits the kind of troops that may be trained in them.
It is recommended that each city mush have a minimum of 14 barracks. A fully grown city with all research done can have 18 barracks by tearing down unwanted buildings like Stable & Forge.
The below tables detail the resources required for each level upgrade of the barracks as well as the kind of troop training each level will unlock.
| Level | Condition | Food | Lumber | Stone | Iron | Time | Queue |
| 1 | R. S. 1 | 250 | 1200 | 1500 | 500 | 00:05:00 | 1 |
| 2 | R. S. 1 | 500 | 2400 | 3000 | 1000 | 00:10:00 | 2 |
| 3 | R. S. 1 | 1000 | 4800 | 6000 | 2000 | 00:20:00 | 3 |
| 4 | R. S. 1 | 2000 | 9600 | 12000 | 4000 | 00:40:00 | 4 |
| 5 | R. S. 1 | 4000 | 19200 | 24000 | 8000 | 01:20:00 | 5 |
| 6 | R. S. 1 | 8000 | 38400 | 48000 | 16000 | 02:40:00 | 6 |
| 7 | R. S. 1 | 16000 | 76800 | 96000 | 32000 | 05:20:00 | 7 |
| 8 | R. S. 1 | 32000 | 153600 | 192000 | 64000 | 10:40:00 | 8 |
| 9 | R. S. 1 | 64000 | 307200 | 384000 | 128000 | 21:20:00 | 9 |
| 10 | R. S. 1 + M. S. | 128000 | 614400 | 768000 | 256000 | 42:40:00 | 10 |
* R. S. 1 = Rally Spot Level 1, M.S. = Michelangelo's Script
| Troops | LV 1 | LV 2 | LV 3 | LV 4 | LV 5 | LV 6 | LV 7 | LV 8 | LV 9 | LV 10 |
| Worker | X | X | X | X | X | X | X | X | X | X |
| Warrior | X | X | X | X | X | X | X | X | X | X |
| Scout | X | X | X | X | X | X | X | X | X | |
| Pikeman | X | X | X | X | X | X | X | X | X | |
| Swordsman | X | X | X | X | X | X | X | X | ||
| Archer | X | X | X | X | X | X | X | |||
| Cavalry | X | X | X | X | X | X | ||||
| Cataphract | X | X | X | X | ||||||
| Transporter | X | X | X | X | X | |||||
| Ballista | X | X | ||||||||
| Battering Ram | X | X | ||||||||
| Catapult | X |
NOTE: There are additional requirements for each troop type. Please check the relevant troop page to check requirements.