With their armor improved, your spearmen will be capable of staying unharmed on the battlefield for longer. Conduct this Study to increase your spearman defense.
| Level | Food | Lumber | Iron | Silver | Gold | Time | Requirements | Increased Spearman Defense | Power | Hero's Experience |
| 1 | 5K | 5K | 3.75K | 4K | 860 | 04h 30m 00s | 1% | 200 | 15K | |
| 2 | 10K | 10K | 7.5K | 10K | 1.4K | 10h 00m 00s | Academy 5 | 3% | 500 | 30K |
| 3 | 20K | 20K | 15K | 25K | 2.65K | 1d 00h 00m 00s | Academy 7 | 7% | 1.25K | 45K |
| 4 | 40K | 40K | 30K | 62.5K | 4.55K | 2d 00h 00m 00s | Academy 9 | 13% | 3.15K | 60K |
| 5 | 80K | 80K | 60K | 160K | 9.1K | 4d 12h 00m 00s | Academy 11 | 21% | 7.85K | 75K |
| 6 | 160K | 160K | 120K | 395K | 19K | 1w 3d 00h 00m 00s | Academy 13 | 31% | 20K | 90K |
| 7 | 320K | 320K | 240K | 980K | 36K | 3w 1d 00h 00m 00s | Academy 15 | 46% | 49K | 105K |
| 8 | 640K | 640K | 480K | 2.45M | 64.5K | 6w 5d 00h 00m 00s | Academy 17 | 66% | 125K | 120K |
| 9 | 1.3M | 1.3M | 960K | 6.15M | 120K | 14w 5d 00h 00m 00s | Academy 19 | 91% | 310K | 135K |
| 10 | 2.6M | 2.6M | 1.95M | 15.5M | 215K | 32w 3d 00h 00m 00s | 131% | 765K | 150K | |
| 5.18M | 5.18M | 3.87M | 25.74M | 473.06K | 59w 4d 02h 30m 00s> 1 Year(s) | 131% | 1.28M | 825K |
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