The 1st Infantry Division of the United States Army is the oldest division in the United States Army. on Flickr.Via Flickr:
When that campaign was over, the division returned to England 5 November 1943[14] to prepare for the eventual Normandy invasion.[3] It was one of the two divisions that landed at Omaha Beach on D-Day[3][15] ,[16] with some of the division’s units suffering 30 percent casualties in the first hour of the assault,[17][18][19] and secured Formigny and Caumont in the beachhead by the end of the day. The division followed up the Saint-Lô break-through with an attack on Marigny, 27 July 1944, and then drove across France in a continuous offensive, reaching the German border at Aachen in September. The division laid siege to Aachen, taking the city after a a direct assault on 21 October 1944.[3] The First then attacked east of Aachen through the Hurtgen Forest, driving to the Rur, and was moved to a rear area 7 December 1944 for refitting and rest following 6 months of combat. When the German Wacht Am Rhein offensive (commonly called the Battle of the Bulge) was launched on 16 December 1944.[3], the division was quickly moved to the Ardennes front. Fighting continuously from 17 December 1944 to 28 January 1945, the division helped to blunt and reverse the German offensive. Thereupon, the division attacked and again breached the Siegfried Line, fought across the Ruhr, 23 February 1945, and drove on to the Rhine, crossing at the Remagen bridgehead, 15–16 March. The division broke out of the bridgehead, took part in the encirclement of the Ruhr Pocket, captured Paderborn, pushed through the Harz Mountains, and was in Czechoslovakia, fighting at Kinsperk, Sangerberg, and Mnichov when the war in Europe ended. Sixteen members of the division were awarded the Medal of Honor.

The 1st Infantry Division of the United States Army is the oldest division in the United States Army. on Flickr.

Via Flickr:
When that campaign was over, the division returned to England 5 November 1943[14] to prepare for the eventual Normandy invasion.[3] It was one of the two divisions that landed at Omaha Beach on D-Day[3][15] ,[16] with some of the division’s units suffering 30 percent casualties in the first hour of the assault,[17][18][19] and secured Formigny and Caumont in the beachhead by the end of the day. The division followed up the Saint-Lô break-through with an attack on Marigny, 27 July 1944, and then drove across France in a continuous offensive, reaching the German border at Aachen in September. The division laid siege to Aachen, taking the city after a a direct assault on 21 October 1944.[3] The First then attacked east of Aachen through the Hurtgen Forest, driving to the Rur, and was moved to a rear area 7 December 1944 for refitting and rest following 6 months of combat. When the German Wacht Am Rhein offensive (commonly called the Battle of the Bulge) was launched on 16 December 1944.[3], the division was quickly moved to the Ardennes front. Fighting continuously from 17 December 1944 to 28 January 1945, the division helped to blunt and reverse the German offensive. Thereupon, the division attacked and again breached the Siegfried Line, fought across the Ruhr, 23 February 1945, and drove on to the Rhine, crossing at the Remagen bridgehead, 15–16 March. The division broke out of the bridgehead, took part in the encirclement of the Ruhr Pocket, captured Paderborn, pushed through the Harz Mountains, and was in Czechoslovakia, fighting at Kinsperk, Sangerberg, and Mnichov when the war in Europe ended. Sixteen members of the division were awarded the Medal of Honor.