Definition of post-Armistice in English:
post-Armistice
(also post-armistice)
adjective ˌpəʊstˈɑːmɪstɪs
Occurring or taking place during the period immediately following the Armistice of 11 November 1918, which marked the end of the First World War (1914–18).
Origin
Early 20th century; earliest use found in The Times. From post- + armistice.