In July 1942, seven months after the
United States entered
World War II, due to the
Japanese attack on Pearl Harbor, Yarborough, now a
major, was selected by
Major General Mark W. Clark to be his Airborne Advisor and in that capacity accompanied him to
England. As a working member of the London Planning Group, he developed the initial concept and plan for the airborne phase of the
Allied invasion of North Africa, codenamed
Operation Torch. When the Paratroop Task Force departed
Land's End, England on November 7, 1942, Yarborough, as
executive officer (XO), accompanied it on its flight over
Spain toward its target objectives in
Algeria. This was the longest operational flight ever made by parachute troops. In the course of the ensuing action the airplane in which he was flying was shot down by
Vichy French fighter aircraft over the Sebkra d'Oran. He participated in combat operations to capture Tafaroui Airdrome in Algeria. A week later, Yarborough parachuted into Youks les Bains Airfield near Tebessa, Algeria (near the Tunisian border) and fighting as part of a combined French and U.S. Paratroop Task Force in Tunisia until January 1943, when he returned to the United States. In March 1943, Yarborough returned to North Africa as
Commanding Officer (CO) of the 2nd Battalion,
504th Parachute Infantry Regiment, under
Colonel Reuben H. Tucker, itself part of the
82nd Airborne Division, commanded by Major General
Matthew Ridgway. Yarborough, promoted to
lieutenant colonel in May, led his battalion throughout the
Allied invasion of Sicily, Operation Husky. Following a disastrous ambush by Italian forces at Tumminello Pass, Yarborough was relieved of his command by Major General Ridgway. Mark Clark, now a
lieutenant general commanding the
American Fifth Army, then had him assigned to his staff. During the
Allied invasion of Italy in September Yarborough served as the airborne
G-3 staff officer of the Fifth Army, and organized the night
drop zone to receive the latest elements of the 82nd Airborne Division, which had flown from Sicily to relieve the beleaguered
beachhead at Salerno. Just prior to the fall of the Italian city and port of
Naples, Yarborough was given command of the
509th Parachute Infantry Battalion, whose CO, Major
Doyle Yardley, had been captured. His unit, as part of
Colonel William O. Darby's
Ranger Force, He returned to Italy in January 1945 as CO of the
473rd Regimental Combat Team, who had previously been antiaircraft gunners. The 473rd serving in the
Italian Campaign, which, during
Operation Grapeshot, fought its way up the
Ligurian Coast to
Genoa and the French border as World War II came to an end. It was during this campaign that he was awarded the
Silver Star. ==Service in Europe, US, and Cambodia==