Army buildings train and hold your army. Most of them are paid with Oil. They show up in the Military tab of the Shop.
Army Base

Your army waits here.
Size: 4 by 4 tiles
Paid with: Oil
Opens at: Headquarters 1
Most you can have: 4 (at Headquarters 10)
Every troop takes some army space. Your army space is the space of all your Army Bases added up.
| Level | Headquarters | Cost | Time | Hitpoints | Army space |
|---|---|---|---|---|---|
| 1 | 1 | 150 Oil | 10s | 250 | 20 |
| 2 | 2 | 720 Oil | 1m | 290 | 30 |
| 3 | 3 | 3,000 Oil | 5m | 330 | 35 |
| 4 | 4 | 12,000 Oil | 20m | 380 | 40 |
| 5 | 5 | 36,000 Oil | 1h | 440 | 45 |
| 6 | 6 | 110,000 Oil | 2h | 500 | 50 |
| 7 | 8 | 420,000 Oil | 8h | 580 | 55 |
| 8 | 10 | 1,000,000 Oil | 18h | 670 | 60 |
Barracks

Trains your troops.
Size: 3 by 3 tiles
Paid with: Oil
Opens at: Headquarters 1
Most you can have: 1 (at Headquarters 10)
Troops are trained here with Oil, and training is instant. Each Barracks level unlocks the next troop. See Troops.
| Level | Headquarters | Cost | Time | Hitpoints | Unlocks |
|---|---|---|---|---|---|
| 1 | 1 | 70 Oil | 5s | 250 | Rifleman |
| 2 | 1 | 90 Oil | 5s | 290 | Marksman |
| 3 | 1 | 120 Oil | 5s | 330 | Heavy |
| 4 | 2 | 600 Oil | 30s | 380 | Looter |
| 5 | 3 | 2,500 Oil | 2m | 440 | Demo Bot |
| 6 | 4 | 10,000 Oil | 10m | 500 | Bomber Plane |
| 7 | 5 | 30,000 Oil | 30m | 580 | Flamethrower |
| 8 | 6 | 90,000 Oil | 1h | 670 | Medic Heli |
| 9 | 7 | 220,000 Oil | 2h | 760 | Gunship |
| 10 | 8 | 350,000 Oil | 4h | 880 | Mech |
| 11 | 9 | 550,000 Oil | 6h | 1,000 | Fire Drone |
| 12 | 10 | 880,000 Oil | 9h | 1,200 | Tunneler |
Embassy

Holds troops your allies send.
Size: 3 by 3 tiles
Paid with: Cash
Opens at: Headquarters 3
Most you can have: 1 (at Headquarters 10)
You need an Embassy to make or join an alliance. Troops your alliance sends you wait here. They help you in attacks and defend your base.
| Level | Headquarters | Cost | Time | Hitpoints | Troop space |
|---|---|---|---|---|---|
| 1 | 3 | 3,000 Cash | 5m | 1,000 | 10 |
| 2 | 4 | 12,000 Cash | 20m | 1,200 | 15 |
| 3 | 6 | 110,000 Cash | 2h | 1,300 | 20 |
| 4 | 8 | 420,000 Cash | 8h | 1,500 | 25 |
| 5 | 9 | 660,000 Cash | 12h | 1,700 | 30 |
| 6 | 10 | 1,000,000 Cash | 18h | 2,000 | 35 |
Research Lab

Makes your troops stronger.
Size: 4 by 4 tiles
Paid with: Oil
Opens at: Headquarters 3
Most you can have: 1 (at Headquarters 10)
Research makes a troop or strike one level stronger. It costs Oil (or Uranium for special troops and strikes) and takes time. One research runs at a time, and not while the lab is being upgraded. Higher research levels need a higher Headquarters and a lab upgraded for it. See the level tables on Troops and Strikes.
| Level | Headquarters | Cost | Time | Hitpoints |
|---|---|---|---|---|
| 1 | 3 | 4,000 Oil | 5m | 500 |
| 2 | 4 | 16,000 Oil | 20m | 580 |
| 3 | 5 | 48,000 Oil | 1h | 660 |
| 4 | 6 | 140,000 Oil | 2h | 760 |
| 5 | 7 | 360,000 Oil | 4h | 870 |
| 6 | 8 | 560,000 Oil | 8h | 1,000 |
| 7 | 9 | 880,000 Oil | 12h | 1,200 |
| 8 | 10 | 1,400,000 Oil | 18h | 1,300 |
Missile Factory

Makes missile strikes.
Size: 3 by 3 tiles
Paid with: Oil
Opens at: Headquarters 5
Most you can have: 1 (at Headquarters 10)
Makes Missile Strike, Med Drop, Adrenaline, Ramp Drop, Power Cut and Reinforce with Oil. Each strike takes 1 minute per space to make. See Strikes.
| Level | Headquarters | Cost | Time | Hitpoints | Strike space |
|---|---|---|---|---|---|
| 1 | 5 | 48,000 Oil | 1h | 420 | 2 |
| 2 | 6 | 140,000 Oil | 2h | 490 | 4 |
| 3 | 7 | 360,000 Oil | 4h | 560 | 6 |
| 4 | 9 | 880,000 Oil | 12h | 650 | 7 |
| 5 | 10 | 1,400,000 Oil | 18h | 740 | 8 |
Special Forces Center

Trains special troops.
Size: 3 by 3 tiles
Paid with: Oil
Opens at: Headquarters 7
Most you can have: 1 (at Headquarters 10)
Special troops are trained here with Uranium. Each level unlocks the next special troop. See Troops.
| Level | Headquarters | Cost | Time | Hitpoints | Unlocks |
|---|---|---|---|---|---|
| 1 | 7 | 230,000 Oil | 2h 45m | 600 | Jetpacker |
| 2 | 7 | 360,000 Oil | 4h | 690 | Biker |
| 3 | 8 | 450,000 Oil | 5h 45m | 790 | Brawler |
| 4 | 8 | 560,000 Oil | 8h | 910 | Tank |
| 5 | 9 | 700,000 Oil | 9h 45m | 1,000 | Commander |
| 6 | 9 | 880,000 Oil | 12h | 1,200 | Blimp |
| 7 | 10 | 1,400,000 Oil | 18h | 1,400 | Grenadier |
Hero Hall

Your heroes live here.
Size: 3 by 3 tiles
Paid with: Uranium
Opens at: Headquarters 7
Most you can have: 1 (at Headquarters 10)
Your heroes also defend your base from here. See Heroes.
Nuclear Lab

Makes your biggest strikes.
Size: 3 by 3 tiles
Paid with: Oil
Opens at: Headquarters 8
Most you can have: 1 (at Headquarters 10)
Makes Smoke Bomb, Bunker Buster, Nitro, Paratroopers and Nuke with Uranium. See Strikes.
| Level | Headquarters | Cost | Time | Hitpoints | Strike space |
|---|---|---|---|---|---|
| 1 | 8 | 510,000 Oil | 5h 45m | 600 | 1 |
| 2 | 8 | 630,000 Oil | 8h | 690 | 2 |
| 3 | 9 | 790,000 Oil | 9h 45m | 790 | 3 |
| 4 | 9 | 990,000 Oil | 12h | 910 | 4 |
| 5 | 10 | 1,600,000 Oil | 18h | 1,000 | 5 |