Modern surveillance through drones, satellites and SIGINT keeps units on the battlefield constantly visible. At the same time, they need a lot of power for EW, SATCOM and UAV operations. Combustion generators give away their position through heat, noise and fuel logistics. The talk shows how solid-state power electronics, high-density storage and source-agnostic burst charging provide silent power with no thermal signature. Its central argument is that energy has become the new ammunition. This directly affects survivability, mobility and logistics.