of the U.S. First Army. In July the divisional commander, Major General Gerow, was promoted to command V Corps and Major General Charles Hunter Gerhardt assumed command of the division, remaining in this post for the rest of the war. Operation Overlord D-Day of Operation Neptune, the cross-channel invasion of Normandy, finally came on 6 June 1944. Neptune was the assault phase of the larger Operation Overlord, codename for the Allied campaign to liberate France from the Germans. The 29th Infantry Division sent the 116th Infantry to support the western flank of the veteran 1st Infantry Division's 16th Infantry at Omaha Beach. Omaha was known to be the most difficult of the five landing beaches, due to its rough terrain and bluffs overlooking the beach, which had been well fortified by its German defenders of the 352nd Infantry Division. The 116th Infantry was assigned four sectors of the beach; Easy Green, Dog Red, Dog White, and Dog Green. Soldiers of the 29th Infantry Division boarded a large number of attack transports for the D-Day invasion, among them landing craft, landing ship, tank, and landing ship, infantry ships and other vessels such as the , , and USS Buncombe County. As the ships were traveling to the beach, the heavy seas, combined with the chaos of the fighting caused most of the landing force to be thrown off-course and most of the 116th Infantry missed its landing spots. Most of the regiment's tank support, launched from too far off-shore, foundered and sank in the channel. The soldiers of the 116th Infantry were the first to hit the beach at 0630, coming under heavy fire from German fortifications. Company A, from the Virginia National Guard in Bedford was annihilated by overwhelming fire as it landed on the 116th's westernmost section of the beach, along with half of Company A, B, and C of the 2nd Ranger Battalion and the 5th Rangers Battalion which was landing to the west of the 116th. The catastrophic losses suffered by this small Virginia community led to it being selected for the site of the National D-Day Memorial. The 1st Infantry Division's forces ran into similar fortifications on the eastern half of the beach, suffering massive casualties coming ashore. By 0830, the landings were called off for lack of space on the beach, as the Americans on Omaha Beach were unable to overcome German fortifications guarding the