wikipedia mentions a tourniquet was used. This makes me think leg means leg. The topmost parts of the legs are part of the groin.
On July 3, Hancock continued in his position on Cemetery Ridge and thus bore the brunt of
Pickett's Charge.
[38] During the massive Confederate artillery bombardment that preceded the infantry assault, Hancock was prominent on horseback in reviewing and encouraging his troops. When one of his subordinates protested, "General, the corps commander ought not to risk his life that way," Hancock is said to have replied, "There are times when a corps commander's life does not count."
[39] During the infantry assault, his old friend, now
Brig. Gen.Lewis A. Armistead, leading a brigade in
Maj. Gen.George Pickett's division, was wounded and died two days later. Hancock could not meet with his friend because he had just been wounded himself, a severe wound caused by a bullet striking the pommel of his saddle, entering his inner right thigh along with wood fragments and a large bent nail.
[40] Helped from his horse by aides,
and with a tourniquet applied to stanch the bleeding, he removed the saddle nail himself and, mistaking its source, remarked wryly, "They must be hard up for ammunition when they throw such shot as that."
[41] News of Armistead's mortal wounding was brought to Hancock by a member of his staff, Captain
Henry H. Bingham. Despite his pain, Hancock refused evacuation to the rear until the battle was resolved. He had been an inspiration for his troops throughout the three-day battle. Hancock later received the thanks of the
U.S. Congress for "... his gallant, meritorious and conspicuous share in that great and decisive victory."
[1]
http://en.wikipedia.org/wiki/Winfield_Scott_Hancock