dawdle (verb)
waste time, be slow.
bugger it up (verb)
British slang for make a mistake.
artillery (noun)
large-caliber guns used in warfare on land.
fortifications (noun)
a defensive wall or other reinforcement built to strengthen a place against attack.
The Somme (proper noun)
The Battle of the Somme, also known as the Somme Offensive, was a battle in the First World War fought by the armies of the British Empire and French Third Republic against the German Empire. It took place between 1 July and 18 November 1916 on both sides of the upper reaches of the River Somme in France.
sap trench (noun)
A tactic used on the Western front in World War I in No Man's Land. A short trench used to encroach on enemy territory without making one's side vulnerable.
tripwire (noun)
a wire stretched close to the ground, working a trap, explosion, or alarm when disturbed and serving to detect or prevent people or animals entering an area.
no man's land (noun)
In WWI, the area in between the Allied and Central Powers trenches.
schrapnel (noun)
fragments of a bomb, shell, or other object thrown out by an explosion.
wank (verb)
Vulgar British slang meaning to masturbate.
rancid (adjective)
smelling or tasting unpleasant as a result of being old and stale.
barnet (noun)
Cockney rhyming slang meaning hair.
valor (noun)
great courage in the face of danger, especially in battle.
ember (noun)
a small piece of burning or glowing coal or wood in a dying fire.
fag (noun)
British slang for cigarette.
latrine (noun)
a toilet or outhouse, especially a communal one in a camp or barracks.
cut-and-cover (noun)
a method of building a tunnel by making a cutting which is then lined and covered over.
casualty (noun)
a person killed or injured in a war or accident.
triage (noun)
the assignment of degrees of urgency to wounds or illnesses to decide the order of treatment of a large number of patients or casualties.
tourniquet (noun)
a device for stopping the flow of blood through a vein or artery, typically by compressing a limb with a cord or tight bandage.