Enemy fighters--possibly Talibn remnants, al Qaeda from across the Pakistan border or another set of Afghan fundamentalist militants called the HIG--are hiding in the Adi Ghar Mountains or villages in the area of southeastern Afghanistan near Spin Buldak. Operation Mongoose was initiated to rout these pockets of resistance. Task Force Devil--82nd Airborne 's 1st Brigade (504the Parachute Infantry Regiment)--supported by Task Force Saber--1st Squadron, 17th Cavalry--led the fight.