Orderly-Officer. An officer who, for a week, goes around and asks if there are "any complaints" and gives the name of the complaining soldier to the Orderly-Sergeant for extra pack drill.
Orderly Room. The Captain's office where everything is disorderly.
Orderly-Sergeant. A sergeant who, for a week, is supposed to do the work of the Orderly-Officer.
"Out of bounds." The official Army term meaning that Tommy is not allowed to trespass where this sign is displayed. He never wished to until the sign made its appearance.
"Out there." A term used in Blighty which means "in France." Conscientious objectors object to going "out there."
"Over the Top." A famous phrase of the trenches. It is generally the order for the men to charge the German lines. Nearly always it is accompanied by the Jonah wish, "With
the best o' luck and give them hell."
Oxo. Concentrated beef cubes that a fond mother sends out to Tommy because they are advertised as "British to the Backbone."
P
Packing. Asbestos wrapping around the barrel of a machine gun to keep the water from leaking out of the barrel casing. Also slang for rations.