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Events on Sunday 20 May 1635 1
1635Battle of AveinFrench and Dutch forces defeat a Spanish army in the Spanish NetherlandsOn 20 May 1635, combined French and Dutch forces defeated a Spanish army near Avein in the Spanish Netherlands, one of the first major engagements after France entered the Thirty Years' War. The victory let the allied army advance on Leuven, though a subsequent siege there failed. It marked the new direct military confrontation between France and Spain.