Your fighters have mastered the art of camouflage — now they can easily land an unexpected blow and take enemy troops by surprise, sowing chaos in their ranks! Learning this Knowledge reduces enemy offense.
| Level | Ale | Timber | Steel | Plates | Thoriars | Scrolls | Time | Requirements | Reduced Enemy Troop Offense | Influence | |
| 1 | 450 | 650 | 650 | 450 | 800 | 500 | 4w 2d 00h 00m 00s | 4 | 35M | ||
| 2 | 615 | 885 | 885 | 615 | 1.1K | 680 | 5w 3d 12h 00m 00s | 1 | 35.5M | ||
| 3 | 855 | 1.25K | 1.25K | 855 | 1.55K | 935 | 7w 2d 00h 00m 00s | 1st, | >6 | 36M | | |
| 4 | 1.25K | 1.75K | 1.75K | 1.25K | 2.2K | 1 350 | 10w 1d 00h 00m 00s | 2nd, | >2nd | 36.5M | | |
| 5 | 1.8K | 2.55K | 2.55K | 1.8K | 3.15K | 1 900 | 14w 5d 00h 00m 00s | 2nd, | >8 | 36.5M | | |
| 6 | 2.65K | 3.8K | 3.8K | 2.65K | 4.7K | 2 800 | 22w 1d 00h 00m 00s | 3rd, | >7 | 37M | | |
| 7 | 4K | 5.8K | 5.8K | 4K | 7.1K | 4 150 | 34w 4d 12h 00m 00s | 4, | >9 | 37.5M | | |
| 8 | 6.25K | 9K | 9K | 6.25K | 11.5K | 6 350 | 56w 4d 00h 00m 00s> 1 Year(s) | 6, | >5 | 38M | | |
| 9 | 9.9K | 14.5K | 14.5K | 9.9K | 18K | 9 850 | 96w 00h 00m 00s> 1 Year(s) | 8, | >5 | 38M | | |
| 10 | 16.5K | 23.5K | 23.5K | 16.5K | 29K | 16 000 | 169w 5d 00h 00m 00s> 3 Year(s) | 10 | 38.5M | ||
| 44.27K | 63.69K | 63.69K | 44.27K | 79.1K | 44.52K | 421w 00h 00m 00s> 8 Year(s) | 10 | 9 | 368.5M |
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