drowned in February 1944, when the ship SS Petrella was torpedoed by the British submarine HMS Sportsman. Organization 51st Infantry Division "Siena", in Naples 31st Infantry Regiment "Siena", in Naples 3x Fusilier battalions Support Weapons Company (65/17 infantry support guns) Mortar Company (81mm Mod. 35 mortars) 32nd Infantry Regiment "Siena", in Caserta 3x Fusilier battalions Support Weapons Company (65/17 infantry support guns) Mortar Company (81mm Mod. 35 mortars) 51st Artillery Regiment "Siena", in Caserta Command Unit I Group (100/17 howitzers) II Group (75/27 field guns) III Group (75/27 field guns) 1x Anti-aircraft Battery (20/65 Mod. 35 anti-aircraft guns) Ammunition and Supply Unit LI Machine Gun Battalion (joined the division in 1942) LI Mortar Battalion (81mm Mod. 35 mortars) LI Mixed Engineer Battalion (formed in 1943) XXXI Replacements Battalion XXXII Replacements Battalion 51st Anti-tank Company (47/32 anti-tank guns) 51st Telegraph and Radio Operators Company (entered the LI Mixed Engineer Battalion in 1943) 83rd Engineer Company (entered the LI Mixed Engineer Battalion in 1943) 51st Medical Section 51st Truck Section 121st Supply Section 120th Transport Section (joined the division in Crete) 851st Transport Section Bakers Section 63rd Carabinieri Section 120th Carabinieri Section 121st Field Post Office Attached to the division from 1941 to early 1942: 141st CC.NN. Legion "Capuana" CXLI CC.NN. Battalion (remained with the division until September 1943) CLIII CC.NN. Battalion 141st CC.NN. Machine Gun Company Attached to the division from 1 March 1942: LI Special Brigade Attached to the division from 1 December 1942: 3rd Tank Company "L" (L6/40 tanks) 4th Machine Gun Company 251st Anti-tank Company (47/32 anti-tank guns; detached from the LI Special Brigade) 33rd Artillery Battery (75/27 field guns) 137th Artillery Battery (75/27 field guns) 199th Anti-aircraft Battery (20/65 Mod. 35 anti-aircraft guns); detached from the LI Special Brigade) Commanding officers The division's commanding officers were: Generale di Divisione Ercole Caligian (15 September 1939 - 30 April 1940) Generale di Divisione Gualtiero Gabutti (1 May 1940 - 9 December 1940) Generale di Divisione Giulio Perugi (10 December 1940 - 6 January 1941) Generale di Divisione Angelico Carta (7 January 1941 - 9 September 1943) References Infantry divisions of Italy in World War II Italian military units and formations of the Greco-Italian War Crete in World War II Military units and formations of Italy in Greece in World War II Military units and formations established in 1939 Military units and formations disestablished in 1943