Upon entering the Mediterranean, "Yukon" and two men-of-war, a destroyer and a destroyer escort, parted company with the convoy and set course for Oran, Algeria. She arrived in the North African port on 30 July, discharged some fresh provisions, and took on some cargo bound for Naples, Italy. The following day, the stores ship stood out of Oran and headed for the Italian peninsula. She arrived in Naples on 3 August but the following morning received orders to move immediately to Castellamare Bay to provision the fleet preparing for the invasion of southern France. "Yukon" left the Naples, Italy, area on 5 August and set a course via Palermo on the southern coast of Sicily for Bizerte in Tunisia. The ship entered the North African port on 8 August and, the following day, sailed with a westbound convoy, GUS-48. On 28 August, after crossing half the Mediterranean and the entire Atlantic, she entered port at Boston, Massachusetts.