Supply Cache

The Supply Cache is an underground storage bunker that stores up to 15 Crates and allows them to be used in the next war. Because of this special power, they can only be built with a Construction Vehicle using Strong Materials, which are only obtained during the Resistance Phase. Crates of Sledge Hammers, Mortars (ammo and tubes), HE Grenades, Howitzer shells and RPGs cannot be stored in it for balance reasons.

Visually, the Supply Cache is the same as the removed Tunnel Network.

100 Strong Materials spawn per Town Hall that's captured after an hour of holding it. The supply cache does not show up on the map.