 On 8 November 1942 Allied forces invaded French North Africa (Operation Torch).German and Italian forces responded on 11 November 1942 by invading the "zone libre" in Case Anton (based on a previous plan called Operation Attila, which had not included any Italian forces).The "zone libre" became the "zone sud" (south zone) from November 1942 onwards; the invading powers shared out its territory between themselves, with a region covering practically the whole area east of the Rhône passing to the Italians.