"The Military Trend" (for women), began during WWII, civilians and ladies took to wearing government issued trench coats as everyday outerwear and in the Vietnam Era. Young people in the anti-war movement appropriated fatigues-camouflage, army jackets, and cargo pants as symbols of protest. They became trendsetters in the process.
It keeps coming back because its functional and like menswear, it has a tough androgynous appeal; "Olive Drab", which is versatile and rich.
To wear it now, remember it is an outfit, not a uniform. Look for details like cargo pockets, epaulets, insignias (think high-style boy scout badges). Avoid too many at once, you want to look contemporary, not literal (Real Simple, September 2013).
Fitness and Health