In-depth study of ancient military tactics for melee combat will allow your warriors to repel strikes instantly and nimbly dodge sharp enemy blades. Upgrade this Knowledge to reduce the offense of enemy troops.
| Level | Food | Lumber | Iron | Stone | Silver | Gold | Totem | Time | Requirements | Reduced Enemy Troop Offense | Influence | Hero’s Experience |
| 1 | 16M | 10M | 10M | 10M | 1M | 275K | 100 | 14w 2d 00h 00m 00s | 1 | 300K | 130K | |
| 2 | 51.5M | 32M | 32M | 32M | 3.2M | 500K | 320 | 28w 4d 00h 00m 00s | 7 | 680K | 150K | |
| 3 | 165M | 105M | 105M | 105M | 10.5M | 915K | 1 050 | 57w 1d 00h 00m 00s> 1 Year(s) | 12 | 1.55M | 170K | |
| 4 | 525M | 330M | 330M | 330M | 33M | 1.7M | 3 300 | 114w 2d 00h 00m 00s> 2 Year(s) | 18 | 3.5M | 200K | |
| 5 | 1.7B | 1.05B | 1.05B | 1.05B | 105M | 3.15M | 10 500 | 228w 4d 00h 00m 00s> 4 Year(s) | 30 | 7.8M | 230K | |
| 2.46B | 1.53B | 1.53B | 1.53B | 152.7M | 6.54M | 15.27K | 442w 6d 00h 00m 00s> 8 Year(s) | 30 | 13.83M | 880K |
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