 Complete the following phrase:  The battalion took part in operations in Tunisia in late 1942 to May 1943, suffering heavy casualties. The battalion and the brigade took part in Operation Fustian, when the Allies invaded Sicily and, again, suffered heavy casualties and was withdrawn to England in late 1943 to train and prepare for the Allied invasion of France. The battalion wasnt used in the initial invasion on 6 June 1944, D-Day, but was held back in the UK in reserve in case any of the five invasion beaches encountered serious difficulties and needed support. The plan turned out not to be required. During the 