Company Leader is not a difficult game to learn, but since the basic idea is different from most other games, it might at first seem a bit complex. Fog of war is the root of Company Leader and this is symbolized by gaming pieces on the game board. Although the player as an officer knows the terrain from maps, he does not know if and where the enemy's troops are. Fog of war is not something static you lift up and won't bother about again. If you lose sight of your surroundings, fog of war will drop down again and conceal the troops you just scouted.
In the right view there is a list of examples that will give you a basic idea of how the game plays. Every link will give you a short animation in this view.