Many people acquire their outdoor apparel one piece at a time. A ski shell here, a puffy jacket there. Base layers received as Christmas gifts. A fleece owned since high school. Then when it's time to ...

Few institutions can devise opaque acronyms like the military, and even then, the ‘Terrestrial Layer System’ (TLS) is a doozy. But don’t let that fool you—it may be one of the U.S. Army’s most ...