Intergalactic communication tower

You are a Republic of Terra defense soldier stationed on a colonial planet at the very edge of the Milky Way. There are no cities, no roads, and no population here - only the dusty surface of a dead rocky world with a thin atmosphere, and a solitary communication tower that maintains your link with allied powers and provides access to the intergalactic network. The tower’s signal is the only voice that can call for help. If it falls into the wrong hands, the consequences for the Republic of Terra will be disastrous. Your task is simple: Prevent the pirates from approaching the tower. And wait for reinforcements from the allied countries.