The Great Patriotic War is a term used in Russia and some other former republics of the Soviet Union to describe the conflict fought during the period from 22 June 1941 to 9 May 1945 along the many fronts of the Eastern Front of World War II, primarily between the Soviet Union and Nazi Germany. For some legal purposes, this period may be extended to 11 May 1945 to include the end of the Prague offensive.

The French invasion of Russia, also known as the Russian campaign and in Russia as the Patriotic War of 1812, was initiated by Napoleon with the aim of compelling the Russian Empire to comply with the continental blockade of the United Kingdom. Widely studied, Napoleon's incursion into Russia stands as a focal point in military history, recognized as among the most devastating military endeavors globally. In a span of fewer than six months, the campaign exacted a staggering toll, claiming the lives of nearly a million soldiers and civilians.