If their opponents discover it in time, they can try to launch an operation that will nix the whole thing. In HoI4, this will be modeled by an event chain Germany will receive that, once finished, gives them a large speed boost to nuclear research. A small group of commandos working with the Norwegian government-in-exile sabotaged a key facility that delayed the Third Reich’s development of nuclear weapons. The example I was presented with was the little-known but very awesome heavy water raid that took place in Nazi-occupied Norway. If you invest more time and resources, however, you can gain expanded intel on the enemy, combat bonuses, and even launch commando raids. If you don’t care to play the game of shadows, you can easily set your agency up to counter enemy spies and focus on more conventional warfare.
The banner feature is Intelligence Agencies, which players will be able to customize with a name and logo before investing in Branches that give different bonuses and unlock top secret actions.