There is no evidence Hitler was opposed by, or received complaints from Franz Halder, Chief of the General Staff, or anyone else, about the directive until August 1942. The new directive created enormous logistical difficulties, with Hitler expecting both Army Groups to advance along different routes. Logistics lines were already at breaking point with ammunition and fuel shortages most apparent and it would be impossible to advance using the conservative supply rates he demanded. The divergence of the Army Groups would also open a dangerous gap between the Armies, which could be exploited by the Soviets. The Italian Alpine Corps, of the Italian Army in the Soviet Union, did not arrive in the Caucasus Mountains with Army Group A, instead remaining with Sixth Army. Army Group A was expected to operate in mountain terrain with only three mountain divisions and two infantry divisions unsuited to the task.