In order to be successful, you must learn to efficiently manage the three main Resources - Fuel, Munitions and Rations. To increase your rate of Resource production, you will need to construct Oil Derricks, Munitions Factories and Landing Zones. These will help provide your Base and Army with everything they need to survive.
Your Fuel and Munitions stockpiles will be stored in Storage Depots in your Base, and your Landing Zones will allow you to be regularly supplied with airdrops of Rations. All of your Units require a certain number of Rations per hour in maintenance costs. Build and Upgrade your Landing Zones and the Air Traffic Control building to increase the tonnage of Rations that you can receive each hour.
Be advised, the total amount of Rations that can be stored in your Base is limited by the capacity of your Field Kitchens, so do not forget to Upgrade them to increase your Ration storage capacity. A smart Commander will not rely solely on his own Resource production, but will conduct various military operations against rivals to procure Resources. You are also authorized to gain Resources through other means, such as Trading with your Friends, Allies – and sometimes – your rivals.