"In its first three weeks in Afghanistan’s Sangin district, the 3rd Battalion, 5th Marines got into more than 100 firefights and sustained 62 casualties. The insurgents managed to negate the Marines’ night-vision gear, and rendered their traditional close-combat tactics useless. Things got so bad, the 3/5’s superior officers even suggested pulling their troops back. That didn’t happen. Instead, the 3/5 went after the militants, hard. When the 3/5 came home, they told counterinsurgency historian Mark Moyar all about their deeply unconventional approach to what was already an unconventional war."