Decide where you wish to build up your base and then press the action button to see the mobile vehicle unfold into a construction yard. This building is the heart of your operation and must be protected at all costs. Within the immediate vicinity of the yard you can now begin expanding your camp. First you need to construct a power plant to provide electricity to your buildings. Next you require an ore refinery which sends out a truck to collect valuable minerals - these precious stones bring in the money to finance your construction.
Barracks allow troops to be trained.
War Factories produce tanks, rocket launchers, artillery. Naval bases provide ships and subs. Airfield planes and choppers etc. Obviously once your base is established you will need to protect your investment. For this purpose there are various forms of immovable weapons and structures that may be placed around your base such as gun turrets, tesla coils, mine fields, concrete walls and wire fencing.