VIII Fighter Command also attacked German transport, logistics centers, and troops during the Normandy campaign, though tactical operations in the European Theater largely were the realm of the Ninth Air Force. During the Battle of the Bulge in late December 1944, several VIII Fighter Command groups were attached to Ninth Air Force Tactical Air Command to relieve the Army's ground forces with close-air support. After the initial German attack was blunted by early January, the units remained attached until February 1945, assisting the counter-attack by Allied forces.