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 | Obsidian | Time | Requirements | Reduced Enemy Troop Offense | Influence | Hero’s Experience |
| 1 | 215M | 135M | 135M | 22.5M | 17M | 490K | 120 | 15w 3d 00h 00m 00s | 1 | 470K | 205K | |
| 2 | 680M | 425M | 425M | 71M | 54M | 890K | 385 | 30w 6d 00h 00m 00s | 6 | 1.1M | 235K | |
| 3 | 2.2B | 1.35B | 1.35B | 225M | 175M | 1.65M | 1.25K | 61w 5d 00h 00m 00s> 1 Year(s) | 11 | 2.4M | 265K | |
| 4 | 6.9B | 4.3B | 4.3B | 720M | 545M | 3.05M | 3.95K | 123w 3d 00h 00m 00s> 2 Year(s) | 19 | 5.45M | 310K | |
| 5 | 22B | 14B | 14B | 2.3B | 1.75B | 5.6M | 13K | 246w 6d 00h 00m 00s> 4 Year(s) | 30 | 12.5M | 360K | |
| 32B | 20.21B | 20.21B | 3.34B | 2.54B | 11.68M | 18.71K | 478w 2d 00h 00m 00s> 9 Year(s) | 30 | 21.92M | 1.38M |
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