The "Blue Division," officially known as the Spanish Volunteer Division, was a military unit composed of Spanish volunteers who fought alongside Nazi Germany during World War II. Formed in 1941, it was primarily made up of soldiers who supported the Axis powers and opposed the Soviet Union. The division participated in the Eastern Front, particularly in the siege of Leningrad. The Blue Division was disbanded in 1943 as Spain, under the leadership of Francisco Franco, sought to maintain neutrality in the war. Despite its disbandment, the division remains a controversial topic in Spanish history, symbolizing the complex political alignments of the time.