The poster I was responding to didn't break out the USMC infantry from the AUS infantry; he wrote "Doing a quick calculation of US infantry divisions, 16 had seen combat before June 1944 and 51 hadn't."Carl Schwamberger wrote: ↑15 Mar 2021, 07:02Technically the four Marine divisions should not be counted as Army. In practical terms their experience had near zero impact on AGFs preparation of US Army formations for serve overseas. There was influence with Army formations teamed with the Marines in the Pacific, but that was a local effect. The exception (there always is) would be from the participation off the Army 1st, 3rd, & 9th ID in Amphibious Forces Atlantic Fleet 1941-1942. Those picked up some useful knowledge of amphibious warfare during that assignment.daveshoup2MD wrote: ↑13 Mar 2021, 20:55... Only 16 seeing action by June of 1944 seems low, even setting aside situations where a division had a RCT or equivalent detached for an action and returned; I'd count the following:
1st, 3rd, 7th, 9th, 25th, 32nd, 34th, 36th, 37th, 41st, 43rd, 45th, 82nd Airborne, 85th, 88th, Americal, Philippine ("12th"); 1st CD; 1st, 2nd, 3rd, and 4th MD = 22.
If the Philippine Division isn't counted, then presumably the British 9th, 12th, 18th, 23rd, and 44th, and (arguably) the 8th, 11th, and 14th Indian don't count, either.
1st, 3rd, 7th, 9th, 25th, 32nd, 34th, 36th, 37th, 41st, 43rd, 45th, 85th, 88th Inf Divs, 82nd Airborne, & 1st & 2d Armored all acquired some combat experience by 1 June 1944. For 17 Divisions. Eleven of those were against the Germans, but only seven had more than a months worth of combat experience vs German ground forces.
You also missed the Americal, which was in action as division from Q4, 1942, 1st CD (which, dismounted,was infantry, and was in action as such in Q11944. which predates June, 1944, obviously), and the Philippine Division (meaning the US Army's "12th" division, not the PCA's 1st, 2nd, 11th, 21st, etc.) which certainly saw combat as a division in Q1-Q2, 1942.