Already after the first experiences of fighting in North Africa at the turn of 1942-1943, the US Army changed the position of the American infantry division. From 1943 onwards, each infantry division had three full-time infantry regiments, in turn composed of three infantry battalions. In addition, the infantry regiment also included other units, for example: an anti-tank company, an artillery company or a staff company. In total, the US Army's infantry regiment numbered approximately 3,100 soldiers. It should also be remembered that the division also included a strong artillery component consisting of four artillery battalions - 3 light and 1 medium, most often armed with 105 and 155 mm howitzers. There was also, among others, an engineering battalion, a repair company, a reconnaissance unit and a Military Police platoon. In total, the US Infantry Division numbered approximately 14,200 people from 1943. It quite clearly dominated the artillery over the German division and had much better and - above all - fully motorized means of transport, which made it a highly mobile tactical formation. It also had much richer "individual" anti-tank weapons in the form of a large number of bazooka launchers, of which there were over 500 in the entire division.
The first attempts to use airborne units took place in the US armed forces in the early 1930s, but they turned out to be unsuccessful. Only the outbreak of World War II in Europe accelerated the development of this formation in the United States, and the first parachute unit in the history of the US Army was one of the platoons of the 29th Infantry Regiment, which in 1940 underwent appropriate training. One of the most important figures in the development of American airborne units was General William C. Lee, also known as the father of this formation. During World War II, two airborne divisions were formed: 82nd ("All American") and 101st ("Screaming Eagle"). American troops of this type played a huge role in the first days of the operation in Normandy (June 1944), but also fought later as part of Operation Market-Garden (1944) or Varsity (1945).