Should the player come to arms with another country - which is likely given the time period - they also control their armed forces on a large scale, choosing which provinces to attack or defend, and with what forces. Players control all aspects of running their country, from developing their military power to politics, diplomacy, espionage, scientific research, and trading. The game takes place between the years of 19, letting you pick any country that existed at the time, and guiding it through the years of the war. Hearts of Iron III is a grand strategy war game, a real-time strategy of epic scale and scope.
This Is a fantastic example of a game meant for fans of the genre.