or National Socialist Motor Corps. Nummer (Nr.) – "number"; some divisional organizations with a unit number but no combat assets, often converted to ordinary divisions later on. (E.g., Division Nr. 157.) O Ober-* – higher; part of several military ranks and titles like Oberleutnant and "Oberkommando". Oberst – lit. "Uppermost" or "Seniormost," German equivalent of a Colonel. Oberbefehlshaber des Heeres (Ob.d.H.) – Commander-in-Chief of the Army. Oberkommando des Heeres (OKH) – "High Command of the Army" and Army General Staff from 1936 to 1945. Oberkommando der Kriegsmarine (OKM) – "High Command of the (War) Navy". Oberkommando der Luftwaffe (OKL) – "High Command of the Air Force". Oberkommando der Wehrmacht (OKW) – "High Command of the Armed Forces". The OKW replaced the War Ministry and was part of the command structure of the armed forces of Nazi Germany. Oberste Heeresleitung (OHL) – "Supreme Army Command", the OHL was the highest level of command of the World War I Deutsches Heer. Offizier im Generalstab – General Staff officer Offizier-Lager (Oflag) – "officer camp"; German prisoner-of-war camp for Allied officers. Ordnungspolizei (Orpo) – "order police" – the regular uniformed police after their nationalization in 1936. Ordonnanzoffizier – aide-de-camp Ortskampf – combat in towns, urban warfare. Osten – east. Ostfront – eastern front (Russian Front) Ostjuden – eastern Jews in Poland. Ostmark – lit. Eastern march, post-Anschluss Austria. Ostpreußen – province of East Prussia. P Panjewagen – one-horse carriage. Panzer – "armour"; German word is derived from Old French pancier, meaning "armour for the belly". It can refer to a tank (see Panzerkampfwagen below) or to an armoured formation. (Panzer Division is literally "Tank Division"; the adjective for "armoured" is gepanzert.) Panzerabwehrkanone (PaK) – anti-tank gun; literally, "tank defence cannon", also used for the main armament for a typical casemate style turretless German tank destroyer. Panzerbefehlswagen (Pz. Bef.Wg) – the commanding tank of any panzer detachment; also used of purpose-built command tanks with extra radio gear. Panzerbüchse – anti-tank rifle Panzerbüchsenschütze – anti-tank rifleman Panzerfaust – literally "armour fist"; a light disposable infantry anti-tank weapon, a small recoilless gun firing a fin-stabilized shaped charge grenade, and a forerunner of the Soviet RPG (rocket-propelled grenade) although the Panzerfaust was more of a grenade launcher. Panzerführer – tank commander, literally "tank leader". Panzerkommandant – tank commander Panzerschreck – literally "armour terror," officially Raketenpanzerbüchse "rocket armour rifle;" a heavy re-usable infantry anti-tank weapon firing a rocket-propelled 88mm