Wikipedia:Today's featured article/December 6, 2020

The 1st Cavalry Division was a cavalry formation of the Royal Yugoslav Army that formed part of the Yugoslav 1st Army Group during the German-led Axis invasion of the Kingdom of Yugoslavia in April 1941. Along with the rest of the Yugoslav Army, the 1st Cavalry Division began mobilising on 3 April 1941. Three days later the Germans commenced operations against the Yugoslav frontiers (map of operations pictured). By the end of the following day, the division's cavalry brigade headquarters and all of the division's cavalry regiments had been detached for duty with other formations. The divisional-level units remained in the vicinity of Zagreb until 10 April, when they were ordered to establish a defensive line southeast of Zagreb along the Sava river, with infantry and artillery support. The division had only begun to deploy for this task when the German 14th Panzer Division captured Zagreb. The divisional headquarters and all attached units surrendered.