The Afrika Korps was formed, on February 12, 1941, after the German Armed Forces High Command (OKW) had decided to send an expeditionary force to Libya to support the Italian army, which had been routed by an Allied counteroffensive, Operation Compass. The German expeditionary force, commanded by Erwin Rommel, at first consisted only of the 5th Panzer Division and various other small units. These elements were organized into the 5th Light Division when they arrived in Africa in February. In the spring the 5th Light Division was joined by the 15th Panzer Division, though it did not arrive until after Rommel had made a counter-offensive and re-taken most of Cyrenaica and gone back over to the defensive. At this time the Afrika Korps consisted of the two divisions plus various smaller supporting units, and was officially subordinated to the Italian chain of command in Africa (though Rommel had conducted his offensive without any authorization).