Reenactor Lessons: Fitting of the M-1943 Field Jacket

"The Army's cold climate combat uniform developed by the Quartermaster Corps along [the] lines of the "layering" principle of body protection. The outer layer of field jacket and trousers are made from a nine-ounce cotton fabric known as five harness sateen, with excellent wind resistant and water repellant characteristics. These are are worn over regular woolen trousers and shirt. In very cold weather, a pile fabric under jacket is added for more warmth. A pile-lined cap in the sateen fabric completes the uniform. In this photograph, the soldier is wearing trigger finger shell mittens, with the trigger finger on the back, and shoepac boots with rubber feet and leather tops. April 1944."

“The Army’s cold climate combat uniform developed by the Quartermaster Corps along [the] lines of the “layering” principle of body protection. The outer layer of field jacket and trousers are made from a nine-ounce cotton fabric known as five harness sateen, with excellent wind resistant and water repellant characteristics. These are are worn over regular woolen trousers and shirt. In very cold weather, a pile fabric under jacket is added for more warmth. A pile-lined cap in the sateen fabric completes the uniform. In this photograph, the soldier is wearing trigger finger shell mittens, with the trigger finger on the back, and shoepac boots with rubber feet and leather tops. April 1944.”

Based off of Combat Lessons, Rank and File In Combat: What They’re Doing, How They Do It series from World War II, this series will offer guides for reenactors for fairly common problems. The topics are drawn from questions that we have received, mostly from new reenactors, over the years. This one will examine how the M-1943 Field Jacket should fit. During World War II the US Army had 24 stock sizes of the M-1943 Field Jacket ranging from 34 Short to 48 Long. Having a correctly sized field jacket was a key part of the function of the overall M-1943 Uniform as it was based on the layering principle. Each part thus had to fit as designed or would not work as well as designed. To quote using War Department Supply Bulletin SB 10-191 Fitting and Issuing of Jacket, Field, M-1943 published February 1st, 1945:
“The issue of improper sizes of [the M-1943 Field Jacket] will cause soldiers discomfort by preventing them from wearing adequate clothing under jacket and will result in ill-fitting clothing.”

For our guide we will be using War Department Supply Bulletin SB 10-191 Fitting and Issuing of Jacket, Field, M-1943, written December 1944, published February 1st, 1945, as well as War Department Technical Manual TM 10-275 Principles of Cold Weather Clothing and Equipment dated October 26, 1944.

While not every soldier’s M-1943 Field Jacket fit “perfectly”, according to the regulations, it appears that most got jackets that fit fairly close. It should also help illustrate the difference in fit between the early M-1943 Field Jacket and the later ‘Pattern B’ fit jackets.