This is the description of the defensive force of the country. It contains figures like the weapon systems and ammunition available.
The defensive force is important for your success in the game. Your country is vulnerable to unprovoked attacks by its neighbors and can be damaged in a war. The defense force can stop attacks but can not be used for attacking others. If you bring your defense to a sufficient level, it will deter others from attacking you. In some cases, automatic defense will be triggered.