Take care of your warriors' health and provide them with fresh, quality provisions. If you do, you will have an army with high morale that will be ready to fight an enemy at any time. Conduct this Study to increase your army's health during a defense.
| Level | Drafts | Gold | Time | Requirements | Increased Army Health During Defense | Power |
| 1 | 250 | 41.5K | 1w 12h 00m 00s | Scholars' Hall 4, Infirmaries' Capacity III 1 | 1 | 13M |
| 2 | 330 | 53K | 1w 3d 12h 00m 00s | Infirmaries' Capacity III 2 | 3 | 13M |
| 3 | 435 | 71.5K | 2w 1d 12h 00m 00s | Infirmaries' Capacity III 3 | 5 | 13.5M |
| 4 | 585 | 97.5K | 3w 2d 00h 00m 00s | Infirmaries' Capacity III 4 | 9 | 13.5M |
| 5 | 810 | 145K | 5w 2d 00h 00m 00s | Infirmaries' Capacity III 5 | 14 | 13.5M |
| 6 | 1 150 | 230K | 8w 6d 12h 00m 00s | Infirmaries' Capacity III 6 | 20 | 13.5M |
| 7 | 1 650 | 380K | 15w 5d 12h 00m 00s | Infirmaries' Capacity III 7 | 30 | 14M |
| 8 | 2 450 | 665K | 29w 3d 00h 00m 00s | Infirmaries' Capacity III 8 | 40 | 14M |
| 9 | 3 600 | 1.25M | 57w 4d 12h 00m 00s> 1 Year(s) | Infirmaries' Capacity III 9 | 50 | 14M |
| 10 | 5 500 | 2.4M | 118w 5d 12h 00m 00s> 2 Year(s) | Infirmaries' Capacity III 10 | 60 | 14.5M |
| 16.76K | 5.33M | 243w 6d 12h 00m 00s> 4 Year(s) | 60 | 136.5M |
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