Top ten weapons used in World War 2 By AltonKeith Period: Sep 1, 1914 to May 19, 2016 The Grenade Number 7 Dec 24, 1917 Thompson submachine gun The date of making is unknown. Period: Sep 1, 1923 to May 20, 2016 The KA-BAR Combat Knife Number 4 Period: Sep 1, 1924 to May 20, 2016 The M1 Garand Number 1 Period: Jun 21, 1935 to Sep 2, 1945 The Karabiner 98K Number 10 Period: Sep 1, 1938 to Sep 2, 1945 The MP40 Number 8 Period: Oct 1, 1940 to Sep 2, 1945 The PPSh-41 Number 2 The last use of the gun is unknown Period: Sep 1, 1941 to May 19, 2016 The M1 Carbine Number 9 Period: Sep 1, 1941 to Sep 2, 1953 The Sten Gun Number 6 Period: Sep 1, 1945 to Sep 2, 2000 The Luger PO8 Number 5