The 3rd Division was part of a convoy of over 100 ships, 35,000 troops that were transported directly from the U.S. in the first of a new series of UG convoys. These east-bound trans-Atlantic convoys from the United States to Gibraltar carrying food, ammunition, and military hardware to North Africa and southern Europe throughout World War II. Mostly assembled in Hampton Roads near the mouth of Chesapeake Bay These convoys terminated in various North African locations.
For more detailed information: http://en.wikipedia.org/wiki/UG_convoys