Context : General Stanisław Maczek ((staˈɲiswav ˈmat͡ʂɛk); 31 March 1892 -- 11 December 1994) was a Polish tank commander of World War II, whose division was instrumental in the Allied liberation of France, closing the Falaise pocket, resulting in the destruction of 14 German Wehrmacht and SS divisions. 
Answer : World War II
In which war did Stanisław Maczek serve?