National Park Service uniforms - Wikipedia
https://en.wikipedia.org/wiki/National_Park_Service_uniformsOn August 18, 1886, the U.S. Army Cavalry arrived in the new park system. Sent in to discourage poachers, defend the forests and stop rampant stagecoach robbery, the Cavalry was easily recognizable by their uniforms, unlike the early "game keepers". The cavalrymen wore riding boots, jodhpurs, and short waist-length tunics of olive drab, which had flat collars. The most distinctive feature was the soldier's "campaign hat", a stiff, wide-brimmed hat of straw or felt wit…
NPS Fashion Week 2021 (U.S. National Park Service)
www.nps.gov › articles › 000Sep 01, 2021 · NPS Uniform History: The complex history of the Green and Gray has long intrigued park staff. The NPS began with strong ties to the military, informing early iterations of the park ranger uniform. Today, the iconic “class A” uniform has transcended several generations of change and still remains a classic.