Shanghai Municipal Police
During World War II, the British Fairbairn-Sykes fighting knife was designed by William E. Fairbairn and Eric A. Sykes, two former members of the Shanghai Municipal Police who trained many soldiers in close-quarters fighting. The Fairbairn-Sykes knife inspired several similar knives of the era such as the V-42 Stiletto designed by Lt. Colonel Robert T. Frederick who commanded the joint US and Canadian First Special Service Force and the United States Marine Raider Stiletto designed by Lieutenant Colonel Clifford H. Shuey. In the USSR, the Red Army issued combat knives based on a single pattern known as the "NR Series".