The more you sweat in times of peace, the less you bleed in war! Your warriors train hard, so your enemy must try even harder to defeat them! Upgrading this Knowledge increases the defense of your troops.
| Level | Ale | Timber | Steel | Thoriars | Scrolls | Time | Requirements | Increased Total Troop Defense | Influence | |
| 1 | 750 | 750 | 900 | 600 | 500 | 2w 4d 00h 00m 00s | 4 | 35M | ||
| 2 | 1.05K | 1.05K | 1.25K | 820 | 680 | 3w 2d 00h 00m 00s | 1 | 35.5M | ||
| 3 | 1.45K | 1.45K | 1.75K | 1.15K | 935 | 4w 3d 00h 00m 00s | 1st, | >6 | 36M | | |
| 4 | 2.05K | 2.05K | 2.45K | 1.65K | 1 350 | 6w 1d 00h 00m 00s | 2nd, | >2nd | 36.5M | | |
| 5 | 2.95K | 2.95K | 3.55K | 2.35K | 1 900 | 8w 6d 00h 00m 00s | 2nd, | >8 | 36.5M | | |
| 6 | 4.4K | 4.4K | 5.25K | 3.5K | 2 800 | 13w 2d 00h 00m 00s | 3rd, | >7 | 37M | | |
| 7 | 6.65K | 6.65K | 8K | 5.35K | 4 150 | 20w 5d 12h 00m 00s | 4, | >9 | 37.5M | | |
| 8 | 10.5K | 10.5K | 12.5K | 8.3K | 6 350 | 33w 6d 12h 00m 00s | 6, | >5 | 38M | | |
| 9 | 16.5K | 16.5K | 20K | 13.5K | 9 850 | 57w 4d 12h 00m 00s> 1 Year(s) | 8, | >5 | 38M | | |
| 10 | 27K | 27K | 32.5K | 21.5K | 16 000 | 101w 6d 00h 00m 00s> 1 Year(s) | 10 | 38.5M | ||
| 73.3K | 73.3K | 88.15K | 58.72K | 44.52K | 252w 5d 12h 00m 00s> 4 Year(s) | 10 | 9 | 368.5M |
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