Padre - Chaplain to the forces.
Pals' Battalions - Battalions of troops recruited from one area, often having the same kind of occupation (e.g. mill-workers).
Panzers - German tanks.
Parados - Raised back of the trench. Usually made of sand-bags.
Parapet - Raised front of the trench. Usually made of sand-bags.
Pavé - Stone cobbled roads, pavements and squares.
PBI - Poor Bloody (British) Infantry.
Perisher - Trench periscope for observing enemy whilst concealed behind parapet or other fortification.
P Helmet - Early gas mask in the form of a hood with mica visor.
Phonetic alphabet - Nominating some letters by words to avoid confusions in voice communication, i.e. Beer = B, Emma = M, Toc = T.
Picket - Steel rod used to support barbed wire. Often cork- screw shaped. Frequently one of the last surface artifacts readily identifiable on the former battlefields, e.g. The Newfoundland Memorial Park.
Pill box - Reinforced concrete structure to house machine gun.
Pip - Star(s) showing officer's rank, e.g. Captain had 3 pips.
PIP EMMA - Afternoon. PM (post meridiem). The spoken letters of the phonetic alphabet.
Pipeline - Trench to conceal telephone cables.
Pip Emma - p.m. - noon to midnight.
Pip, Squeak and Wilfred - 1914/15 Star, War and Victory Medals.
Platoon - Sub-unit of infantry Company, i.e. about 50 men.
Plonk - Non-vintage white wine.
Plum and apple - Jam.
PM - Provost Marshal. Senior officer in Military Police.
Poilu - French infantryman - the bearded one.
Point blank - Extreme short range - over the sights of artillery guns.
POL - Petrol, oil and lubricants for transport.
Pom fritz - French fries.
Pom Pom - Small calibre cannon; sometimes grouped in two's or four's for maximum effect against aircraft or balloons.
Poodle faker - Officer with social pre-occupations.
Pork and beans - Portuguese troops.
Potato-masher - German stick-grenade.
Poilu - French soldiers themselves preferred les hommes or les bonhommes. (French, from poilu hairy, from Middle French, from poil hair, from Latin pilus )
Pickelhaube - The distinctive early war helmet with a spike on top.
Pozzy - Jam.
PPCLI - Princess Patricia's Canadian Light Infantry.
Provo - Provost-sergeant - Military Police.
PT - Physical Training.
PTI - Physical Training Instructor.
Pukka - Absolutely genuine.
Pull-through - Strong cord to pull oiled four-by-two through rifle barrel to clean it.
Push - Term used by General Staff to indicate an offensive, e.g. 'The Big Push', as was said of The Battle of the Somme.
Pusher - Aircraft with rear mounted propeller. Comparatively inefficient but gave clear field of fire for the front gunner.
Puttee - Narrow cloth band wrapped around lower leg to provide over-lap between boot and trouser bottom; in lieu of canvas gaiter.