An airfield can send 10 planes to your neighbour countries and help them defending when they are under attack. Each upgrade level builds air units in this region 5% faster (up to 45% at level 10).
Cost
15,000
50
75
Construction Time
04:00:00
An harbor can send 1 ship to your neighbour countries and help them defending when they are under attack. Each upgrade level builds naval units in this region 5% faster (up to 45% at level 10).
Cost
25,000
600
150
Construction Time
08:00:00
An Train station can send 25 soldiers and 1 tank to your neighbour countries and help them defending when they are under attack. Each upgrade level speeds up fleets departing this region by 5% (up to 45% at level 10).
Cost
10,000
500
750
Construction Time
03:00:00
Within a barrack you can train troops. Each upgrade level trains troops in this region 5% faster (up to 45% at level 10).
Cost
2,000
100
250
Construction Time
01:00:00
Factory can build armor and mechanized vehicles. Each upgrade level builds tanks and artillery in this region 5% faster (up to 45% at level 10).
Cost
10,000
500
750
Construction Time
06:00:00
Radar stations can detect enemy troop movements. Each upgrade level extends the radar vision range by one extra region.
Cost
50,000
2,500
5,000
Construction Time
10:00:00
Used to build and launch missiles. Each upgrade level builds missiles in this region 5% faster (up to 45% at level 10).
Cost
50,000
2,500
5,000
Construction Time
20:00:00