Operating in the two northernmost military regions, the 1st Cavalry Division (Airmobile) launches two major operations. In the first operation, conducted by the 1st Cavalry Division in Quang Tri and Thua Thien provinces, south of the Demilitarized Zone, “First Team” units launched Operation Jeb Stuart. This operation was a large-scale reinforcement of the Marines in the area and focused on clearing enemy Base Areas 101 and 114. Jeb Stuart was terminated on March 31 with enemy casualties listed at 3,268; U.S. casualties were 291 killed in action and 1,735 wounded. On the same day that Jeb Stuart was launched, other 1st Cavalry units launched Operation Pershing II in the coastal lowlands in Binh Dinh Province. This operation, designed to clear enemy forces from the area, lasted until February 29.