In the early 1960s, Natick Laboratories developed a prototype/experimental uniform for Special Forces advisors in Southeast Asia. This uniform was based on the OG107 design and introduced the use of poplin cloth, which provided certain advantages in tropical climates.

The term “Special Warfare” was used to describe operations conducted in environments beyond the normal temperate climates that the US Army typically prepared for.

It’s important to note that these uniforms were not privately purchased but rather issued to the Special Forces advisors for their specific operational needs in Southeast Asia.

Pre 1st pattern jungle fatigue jacket, tag above reads:
SHIRT,MAN’S,COTTON.
OG.107.SPECIAL.WARFARE.
CONT.NO.5186

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