| A | B |
|---|
| An area between opposing armies, over which no control has been established. | no man's land |
| Combat in which each side occupies a system of protective trenches. | Trench warfare |
| To assemble or marshal (armed forces, military reserves, or civilian persons of military age) into readiness for active service. | Mobilization |
| An absolute monarch who rules with unlimited authority; by extension, any person with undisputed authority in a relationship or situation. | Autocrat |
| A fighter pilot credited with destroying a prescribed number or more of enemy aircraft, usually five, in combat. | Ace |
| A German submarine short for Unterseeboot lit., undersea boat. | U-boat |
| An exceptionally long speech, as one lasting for a day or days, to prevent the adoption of a measure generally favored. | Filibuster |
| To accompany for excort, usually for protection: A destroyer convoyed the merchant ship. | Convoy |
| A temporary suspension of hostilities by agreement of the warring parties; truce: World War I ended with the armistice of 1918. | Armistice |
| The deliberate and systematic extermination of a national, racial, political, or cultural group. | Genocide |
| A fixed portion, especially an amount of food allotted to persons in military service or to civilians in times of scarcity. | Rationing |
| Incitement of discontent or rebellion against a government, any action, esp. in speech or writing, promoting such discontent or rebellion. | Sedition |
| To strip (persons, places, etc.) of goods, valuables, etc.; plunder; pillage; despoil. (as in spoils of war). | Spoils |
| The operation of aircraft, the design, development, and production of aircraft. | Aviation |
| A situation in which further action is blocked; a deadlock. | Stalemate |
