Napoleon used two primary strategies for the approach to battle. His "Manoeuvre De Derrière" ("move onto the rear") was intended to place the French Army across the enemy's lines of communications. This forced the opponent to either march to battle with Napoleon or attempt to find an escape route around the army. By placing his army into the rear, his opponent's supplies and communications would be cut. This had a negative effect on enemy morale. Once joined, the battle would be one in which his opponent could not afford defeat. This also allowed Napoleon to select multiple battle angles into a battle site. Initially, the lack of force concentration helped with foraging for food and sought to confuse the enemy as to his real location and intentions.