Of or relating to the period before a war (identified by the context), pre-war; occurring or existing before a war.

Of or relating to the period after a war, post-war; occurring or existing after a war; resulting from a war. Also figurative.

Of, relating to, or characteristic of the period after a war (esp. those of 1914–18 or 1939–45).

= antebellum, adj.; cf. pre-war, adj.

Following a war; of, relating to, or characteristic of the period following a war. Now chiefly with reference to the wars of 1914–18 and 1939–45. Cf…

Of a period occurring between wars; spec. of the period 1919 to 1939 between the two world wars.

of or belonging to the period between two wars, spec. the world wars of 1914–18 and 1939–45.