1943 - M18 Modified Hellcat
1943 - USA M18 Howitzer Motor Carriage
Armament: 1 - 105mm howitzer
1 - 0.5" MG AA
Engine: Continental, 9cyl., radial air-
cooled, gas, 340 or 400 hp
Speed: 55 mph
Range: 105 miles
Crew: 5
Weight: 17 tons

Modified "Hellcat" mounting a 105mm howitzer on
the M18 chassis. Not a successful design. Only one
built.
Shocked Shocked Shocked

All 105mm and 155mm howitzer battalions in the ETO were truck-drawn, although a Table of Equipment (TE) for a tractor-drawn 155mm battalion existed. The 155mm gun battalions were almost all tractor-drawn, although a few evidently were also truck-drawn.
The standard prime mover was a two-and-one-half ton truck for the 105mm and a five-ton truck for the 155mm howitzers.

Although US artillery was second to none in the war, problems with ammunition supply did hamper efficiency at various periods. This problem reached its nadir during the fall of 1944, when the US artillery in Europe was reduced to strict rationing of ammunition. At one point, the artillery was limited to fewer than twenty 105mm rounds-per-day-per- gun. From 11 October to 7 November 1944, Third Army fired a total of 76,325 rounds of all types (an average of 2,726 per-day), which was less than the number fired on a single day during the Battle of the Bulge. Indeed, at the end of the Battle of the Bulge, ammunition reserves in the ETO were 31 percent of the War Department's planning levels (which were already conceded to be too low). Like the personnel replacement problem, the ammunition shortage was only truly solved by the ending of the war.