Why the U.S. Army transitioned from blue to green and back again

Countries & Cities · Published 12 October 2026 Swipe more like this →

In short: For much of its history, the U.S. Army used the same clothing for combat and garrison duties. However, modern warfare necessitated a split between functional field gear and formal service attire, leading to a complex evolution of colors, fabrics, and styles designed to distinguish soldiers from civilians.

The distinction between field and garrison wear became vital during the World Wars. In the early 1900s, the Army utilized a variety of uniforms, including olive drab wool for field service and khaki cotton for hot weather. By World War II, the military had clearly separated its gear, such as the M1941 field jacket for combat and specific service coats for garrison use. This era also saw the rise of the 'pinks and greens' look, where officers wore a darker, belted olive drab coat with contrasting light taupe trousers.

Following the Second World War, excess surplus stock necessitated a unique military look, resulting in the 1954 debut of the 'Class A' service uniform in Army Green Shade 44. To distinguish service members from civilian employees, this particular grey-green tint was selected. This green uniform remained the standard for decades, though its components evolved, such as the 1964 introduction of a poly-wool serge blend jacket and the 1979 shift to a pale green-grey shirt.

The uniform landscape shifted again in the 21st century. In 2006, General Peter Schoomaker announced a move toward a single service uniform for all ranks to reduce complexity. This resulted in the Army Blue Service Uniform becoming mandatory for all soldiers by October 2015. However, in 2018, the Army announced a return to its roots: the Army Green Service Uniform. Based on the WWII-era 'pinks and greens,' this new uniform was authorized in 2020 and serves as the primary everyday service attire for office and official settings.

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