08/01/2026
It is generally conceded that the United States Army, in World War Two, was one of best equipped, and supplied, military forces in the annals of warfare. While this is generally true, one of the more confounding aspects is the inability of the US Army to develop, and issue, in any appreciable quantity, garments that were specifically made for the environments troops were fighting in.
The two most glaring examples of this are the winter of 1944-45 in Europe, and clothing for the Pacific theater. During the miserable winter of 44-45, the US Army had certain clothing items, such as shoe packs, pile liners, and other garments that would have significantly eased the suffering of their troops in the front lines of Europe, but many frontline units only saw them after the need had passed. With regard to clothing for the tropics, the deficiencies are even more glaring.
Prior to America’s entry into WWII, the standard hot weather uniform for Army personnel were the khaki shirt, and trousers, made in 8-ounce cotton twill. While perfectly suitable for daily wear in Honolulu or Manilla, these cotton uniforms were ill suited for wear in the steamy jungles of the South Pacific.
In 1941 the Army began to replace the blue denim fatigue uniform, with one made from Herringbone Twill (HBT), in a light, olive drab shade. When war broke out in 1941, necessity would make this the default uniform for troops destined for action in the Pacific, even if the uniform itself was far from ideal.
As Christopher Reuscher put it, “because HBT outfits were developed primarily for chore and mechanic duties, they would never provide an ideal solution for tropical combat use. Testing showed that HBT fabric provided inadequate protection against mosquitoes, was considered too hot for torrid tropical conditions, and became heavily saturated when wet.”
In 1942, General Douglas MacArthur requested that the Quartermaster Department produce 150,000 sets of jungle equipment. In this, he specifically asked for a theater specific uniform. It just so happened that the US Army was in the process of testing various pieces of uniform, and equipment, in the Panama Canal Zone, and, upon receipt of MacArthur’s request, tropical clothing development was made a priority in the quartermaster department.
To save time, it was decided that, despite its shortcomings, the HBT fabric already in stores would be used. Testing in Panama had shown troops preferred a one-piece garment, as opposed to a two piece one, and this became the foundation for what would become the US Army’s only specialized jungle uniform of the war.
Concurrent to this, the Engineer Corps had been dabbling in camouflaged uniforms, particularly uniforms that were reversable for specific seasons, or terrain. Out of these tests, the US Army would select the dapple pattern that would be used in both Army and Marine Corps uniforms.
In August of 1942, the suit, jungle, one piece (also known in collector circles as the M-1942 Jungle Suit) was declared standard issue. Shortly there after, contract orders were placed with various manufacturers.
As mentioned before, the uniform was based upon the one piece HBT coveralls used in Panama, but this is where the similarity ended. The body of the uniform was made from the camouflage HBT fabric, and had zippered front. It had four, expanding cargo pockets (two on the breast, and two on the hips) for carrying extra materials. These pockets were intended to allow a soldier to carry enough supplies to sustain himself for a short period of time, and not have to carry a heavy, bulky pack, with him.
The weight that would come with filling these pockets was distributed upon the soldiers shoulders via a set of internal suspenders. As an added bonus, the wearer could raise, and lower the suspenders, which would in turn raise or lower the crotch of the suit- a protection against chaffing. In a similar vein, the generous cut of the suit, was intended to facilitate airflow, and thus cool the soldier down in hot climates. Instead of buttons, the pockets were fastened with snaps to prevent being caught on various floral, and fauna in the jungle.
You can see that the US Army did, given the timetable, and materials available, attempt to produce a garment that, for its time, would have been state of the art, had wartime contingencies not expedited its development. In total, just over 150,000 suits were made on the first round of contracts (a miniscule amount of clothing by WWII standards).
It took about 4-5 months for the suits to be made, and delivered to troops in the Pacific. They were first issued to troops fighting on New Guinea, and the suit was generally not well recieved from those who received them.
There were several complaints from troops. The most glaring was that there was no back flap on the uniform. If a soldier had to relieve himself, he had to take off all of his gear, unzip the suit, and then go to the latrine. Troops also complained that the suit was too heavy, and hot in the tropical climates, and uncomfortable to wear. Finally, the novel internal suspender system was derided as being uncomfortable, and too restrictive of the soldier’s movement.
The dissatisfaction with the new uniform was such that, US Army Quartermaster Corps personnel were immediately dispatched to study the problem. They recommended that a two piece version be produced, in a lighter fabric, and the remaining suits were eventually pulled from the front lines and reissued to service personnel.
A two piece suit was in the process of being developed, but the army could not get past the main hurdle that had hamstrung its tropical uniform efforts from the start- finding a durable, but lightweight, airy, fabric to use in lieu of the heavy HBT fabric. To compound matters even further, it was eventually deemed that the camouflage pattern in use was ineffective in the jungle when compared with a dark shade of olive drab. As a result, the quartermaster department was never able to develop a follow up to the 1942 edition of the jungle uniform.
Thus would end the US Army’s only wartime attempt at a specialized jungle uniform. Until the end of the war, the two piece HBT fatigue set would be the defecto tropical uniform for the GI in the PTO, even if it wasn’t wholly adequate for the job.
Sources:
Doughboy to GI by Kenneth Lewis
US Army Uniforms of WWII by Shelby Stanton
The World War II GI: US Army Uniforms 1941-45 in Color Photographs by Richard Windrow and Tim Hawkins
Early Printed Camouflage Uniforms of the Pacific War 1942-43 by Christopher Reuscher
