Romania during World War II

Following the outbreak of World War II on 1 September 1939, the Kingdom of Romania under King Carol II officially adopted a position of neutrality. However, the rapidly changing situation in Europe during 1940, as well as domestic political upheaval, undermined this stance. Fascist political forces such as the Iron Guard rose in popularity and power, urging an alliance with Nazi Germany and its allies. As the military fortunes of Romania's two main guarantors of territorial integrity — France and Britain — crumbled in the Fall of France, the government of Romania turned to Germany in hopes of a similar guarantee, unaware that the then dominant European power had already granted its consent to Soviet territorial claims in a secret protocol of 1939's Molotov-Ribbentrop Pact.

In summer 1940, a series of territorial disputes were diplomatically resolved unfavorably to Romania, resulting in the loss of most of the territory gained in the wake of World War I. This caused the popularity of Romania's government to plummet, further reinforcing the fascist and military factions, who eventually staged a coup that turned the country into a fascist dictatorship under Mareșal Ion Antonescu. The new regime firmly set the country on a course towards the Axis camp, officially joining the Axis powers on 23 November 1940. As a member of the Axis, Romania joined the invasion of the Soviet Union on 22 June 1941, providing equipment and oil to Nazi Germany as well as committing more troops to the Eastern Front than all the other allies of Germany combined. Romanian forces played a large role during the fighting in Ukraine, Bessarabia, Stalingrad, and elsewhere. Romanian troops were responsible for the persecution and massacre of up to 260,000 Jews on Romanian-controlled territories, though most Jews living within Romania survived the harsh conditions.

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