German invasion of Belgium may refer to:
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German invasion of Belgium (1914)
The German invasion of Belgium was a military campaign which began on 4 August 1914. Earlier, on 24 July, the Belgian government had announced that if war came it would uphold its neutrality. The Belgian government mobilised its armed forces on 3 ...
during World War I
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German invasion of Belgium (1940)
The invasion of Belgium or Belgian campaign (10–28 May 1940), often referred to within Belgium as the 18 Days' Campaign (french: Campagne des 18 jours, nl, Achttiendaagse Veldtocht), formed part of the greater Battle of France, an offensive ...
during World War II
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