AdvertisementU.S. Forces Increasingly Drawn Back Into Afghanistan's BattlesJanuary 08, 2016Tom BowmanfacebookEmailAfghan security forces patrol near their base in the Marjah district of Helmand province on Dec. 23. Dozens of Marines were killed in Marjah five years ago, and since then the Taliban have slipped back in. Now American forces are increasingly being drawn back into the fight. (AFP/Getty Images)