Term | Explanation |
| Pact of Steel | Alternative name for the Rome-Berlin Axis. |
| Panzer | Armour - became a general term for German tanks (the correct term for tank being Panzerkampfwagen - PzKpfw) and also used to describe armoured actions. |
| Panzergrenadier | German mechanized infantry. |
| Plunder | Operational code name for British/Canadian offensive across the Rhine on 13th March 1945. |
| Pluto | Pipe Line Under The Ocean - pipeline laid under the English Channel to supply oil to the Normandy invasion forces in 1944. |
| PNCL | Polish Committee of National Liberation. |
| POA | Pacific Ocean Area. |
| Pointblank | Operational code name for the Allied bombing offensive against Germany from 1943. |
| Priceless | Operational code name for Allied operations in the Mediterranean theatre of operations in 1943. |