Engineers can create movable wooden fortifications that protect your warriors when approaching a Town's walls. Conduct this Study to increase your army's defense stats during a Raid.
| Level | Drafts | Time | Increased Army Defense During a Raid | Power |
| 1 | 22 000 | 24w 6d 12h 00m 00s | 10 | 13M |
| 2 | 22 500 | 27w 1d 00h 00m 00s | 20 | 13M |
| 3 | 23 000 | 30w 3d 00h 00m 00s | 30 | 13.5M |
| 4 | 24 000 | 35w 1d 12h 00m 00s | 40 | 13.5M |
| 5 | 25 000 | 42w 1d 00h 00m 00s | 50 | 13.5M |
| 6 | 26 000 | 52w 00h 00m 00s | 60 | 13.5M |
| 7 | 27 500 | 66w 2d 00h 00m 00s> 1 Year(s) | 70 | 14M |
| 8 | 29 500 | 87w 1d 00h 00m 00s> 1 Year(s) | 80 | 14M |
| 9 | 31 500 | 118w 2d 12h 00m 00s> 2 Year(s) | 90 | 14M |
| 10 | 34 000 | 165w 6d 12h 00m 00s> 3 Year(s) | 100 | 14.5M |
| 265K | 649w 4d 00h 00m 00s> 12 Year(s) | 100 | 136.5M |
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