There are three types of
Depots:
Supply Depots, Oil
Depots and Ammo
Depots.
• Supply Depots expand your zone of supply and do not count against your building limit.
• Oil
Depots supply your units with fuel and
count as one against your building limit.
• Ammo
Depots supply your units with ammunition and
count as one against your building limit.
Source: Axis and Allies Official Manual
