Overview
Shield Upgrade increases Infantry Health. It is available in 6 tiers (Shield Upgrade I, Shield Upgrade II, Shield Upgrade III, Shield Upgrade IV, Shield Upgrade V, Shield Upgrade VI), each with multiple upgrade levels.
Research costs include 5 resources: Resource, Meat, Wood, Coal, and Iron. Prerequisites require a specific Research Center level and, for higher tiers, completion of previous tiers. Construction times are base times and do not account for Research Speed bonuses.
Shield Upgrade I
| Level |
Prerequisites |
Resource |
Meat |
Wood |
Coal |
Iron |
Time |
Bonus |
Power
|
| 1 |
Research Center 7 Close Combat I 1 |
10,000 |
10,000 |
2,000 |
500 |
600 |
00:03:22 |
Infantry Health: 1.25% |
5,625
|
| 2 |
Research Center 8 |
14,000 |
14,000 |
2,800 |
700 |
840 |
00:05:03 |
Infantry Health: 1.25% |
5,625
|
| 3 |
Research Center 9 |
30,000 |
30,000 |
6,000 |
1,500 |
1,800 |
00:13:30 |
Infantry Health: 1.50% |
6,750
|
Shield Upgrade II
| Level |
Prerequisites |
Resource |
Meat |
Wood |
Coal |
Iron |
Time |
Bonus |
Power
|
| 1 |
Research Center 12 Close Combat II 1 |
100,000 |
100,000 |
20,000 |
5,000 |
1,200 |
00:37:30 |
Infantry Health: 1.75% |
7,875
|
| 2 |
Research Center 13 |
140,000 |
140,000 |
28,000 |
7,000 |
1,700 |
00:56:15 |
Infantry Health: 1.75% |
7,875
|
| 3 |
Research Center 14 |
300,000 |
300,000 |
60,000 |
15,000 |
3,500 |
02:30:00 |
Infantry Health: 2.00% |
9,000
|
Shield Upgrade III
| Level |
Prerequisites |
Resource |
Meat |
Wood |
Coal |
Iron |
Time |
Bonus |
Power
|
| 1 |
Research Center 17 Close Combat III 1 |
310,000 |
310,000 |
63,000 |
15,000 |
3,500 |
02:30:00 |
Infantry Health: 2.50% |
11,250
|
| 2 |
Research Center 18 |
410,000 |
410,000 |
81,000 |
20,000 |
4,500 |
03:00:00 |
Infantry Health: 2.50% |
11,250
|
| 3 |
Research Center 19 |
540,000 |
540,000 |
110,000 |
27,000 |
6,000 |
05:00:00 |
Infantry Health: 2.50% |
11,250
|
| 4 |
Research Center 20 |
1,300,000 |
1,300,000 |
260,000 |
65,000 |
14,000 |
15:00:00 |
Infantry Health: 4.00% |
18,000
|
Shield Upgrade IV
| Level |
Prerequisites |
Resource |
Meat |
Wood |
Coal |
Iron |
Time |
Bonus |
Power
|
| 1 |
Research Center 22 Close Combat IV 1 |
920,000 |
920,000 |
180,000 |
46,000 |
12,000 |
16:40:00 |
Infantry Health: 4.00% |
18,000
|
| 2 |
Research Center 23 |
1,100,000 |
1,100,000 |
220,000 |
55,000 |
14,000 |
21:40:00 |
Infantry Health: 4.00% |
18,000
|
| 3 |
Research Center 24 |
1,300,000 |
1,300,000 |
260,000 |
65,000 |
17,000 |
1d 09:20:00 |
Infantry Health: 4.00% |
18,000
|
| 4 |
Research Center 25 |
1,600,000 |
1,600,000 |
330,000 |
83,000 |
21,000 |
2d 02:00:00 |
Infantry Health: 4.00% |
18,000
|
| 5 |
Research Center 26 |
3,400,000 |
3,400,000 |
680,000 |
170,000 |
44,000 |
5d 05:00:00 |
Infantry Health: 6.50% |
29,250
|
Shield Upgrade V
| Level |
Prerequisites |
Resource |
Meat |
Wood |
Coal |
Iron |
Time |
Bonus |
Power
|
| 1 |
Research Center 27 Close Combat V 1 |
1,600,000 |
1,600,000 |
330,000 |
83,000 |
48,000 |
4d 08:10:00 |
Infantry Health: 4.75% |
21,375
|
| 2 |
Research Center 28 |
1,600,000 |
1,600,000 |
330,000 |
83,000 |
48,000 |
4d 08:10:00 |
Infantry Health: 4.75% |
21,375
|
| 3 |
Research Center 29 |
1,600,000 |
1,600,000 |
330,000 |
83,000 |
48,000 |
4d 18:35:00 |
Infantry Health: 4.75% |
21,375
|
| 4 |
Research Center 30 |
2,000,000 |
2,000,000 |
400,000 |
100,000 |
58,000 |
7d 04:55:00 |
Infantry Health: 4.75% |
21,375
|
| 5 |
Research Center 30 |
2,300,000 |
2,300,000 |
470,000 |
120,000 |
67,000 |
8d 17:00:00 |
Infantry Health: 4.75% |
21,375
|
| 6 |
Research Center 30 |
4,600,000 |
4,600,000 |
930,000 |
230,000 |
130,000 |
20d 19:00:00 |
Infantry Health: 8.00% |
36,000
|
Shield Upgrade VI
| Level |
Prerequisites |
Resource |
Meat |
Wood |
Coal |
Iron |
Time |
Bonus |
Power
|
| 1 |
Research Center 30 Close Combat VI 1 |
5,900,000 |
5,900,000 |
1,200,000 |
290,000 |
99,000 |
20d 04:00:00 |
Infantry Health: 5.50% |
24,750
|
| 2 |
Research Center 30 |
5,900,000 |
5,900,000 |
1,200,000 |
290,000 |
99,000 |
20d 04:00:00 |
Infantry Health: 5.50% |
24,750
|
| 3 |
Research Center 30 |
5,900,000 |
5,900,000 |
1,200,000 |
290,000 |
99,000 |
22d 04:40:00 |
Infantry Health: 5.50% |
24,750
|
| 4 |
Research Center 30 |
7,000,000 |
7,000,000 |
1,400,000 |
360,000 |
120,000 |
35d 20:00:00 |
Infantry Health: 5.50% |
24,750
|
| 5 |
Research Center 30 |
8,200,000 |
8,200,000 |
1,600,000 |
420,000 |
140,000 |
43d 04:00:00 |
Infantry Health: 5.50% |
24,750
|
| 6 |
Research Center 30 |
16,000,000 |
16,000,000 |
3,200,000 |
820,000 |
270,000 |
103d 14:40:00 |
Infantry Health: 9.00% |
40,500
|
See Also
