http://www.history.com/images/media/interactives/AfricanAmericansWWII.pdf
From Wikipedia
During World War II, most African American soldiers still served only as truck drivers and as stevedores (except for some separate tank battalions and Army Air Forces escort fighters).[27] In the midst of the Battle of the Bulge in December 1944, General Eisenhower was severely short of replacement troops for existing military units which were totally white in composition. Consequently, he made the decision to allow African American soldiers to pick up a weapon and join the white military units to fight in combat for the first time.[27] More than 2,000 black soldiers had volunteered to go to the front.[28] This was an important step toward a desegregated United States military.
Patton
See also: George S. Patton
As the 761st was about to enter combat, Patton reviewed the battalion and made a speech to the men which offered a guarded vote of confidence in their abilities:
Men, you're the first Negro tankers to ever fight in the American Army. I would never have asked for you if you weren't good. I have nothing but the best in my Army. I don't care what color you are as long as you go up there and kill those Kraut sons of #####es. Everyone has their eyes on you and is expecting great things from you. Most of all your race is looking forward to your success. Don't let them down and damn you, don't let me down![2]
However, like most American military officers of the era, Patton expressed his doubts about using black men in combat. On returning to headquarters following the review, he remarked, "They gave a good first impression, but I have no faith in the inherent fighting ability of the race." He only put this sentiment aside and accepted the 761st when he desperately needed all the ground power he could get. Even after the war, Patton was not inclined to reform his perception of black soldiers. In War As I Knew It, he relates the interaction described above, and comments, "Individually they were good soldiers, but I expressed my belief at the time, and have never found the necessity of changing it, that a colored soldier cannot think fast enough to fight in armor."[3]
Eric