Lester W. Grau, a Vietnam War veteran and retired lieutenant colonel in the U.S. Army, is an analyst for the Foreign Military Studies Office at the Army's Combined Arms Center at Fort Leavenworth. He is also the editor and translator of The Bear Went Over the Mountain: Soviet Combat Tactics in Afghanistan and The Other Side of the Mountain: Mujahideen Tactics in the Soviet-Afghan War. Michael A. Gress is a native of Siberia and a former soldier in the motorized rifle forces of the Soviet Army.