 Complete the following phrase:  In early 1943, the unit was sent to Gibraltar before moving to North Africa in April from where they were involved in the Allied invasion of Sicily and operations in Italy prior to being withdrawn to Britain to prepare for Operation Overlord. On D-Day they went ashore on 6 June 1944 as part of the 1st Special Service Brigade tasked with linking up with the 6th Airborne Division on the eastern flank of Sword before being withdrawn. Later they took part in the Allied counterattack during the 