Russian Empire
The Russian Empire, also known as Imperial Russia or simply Russia, was an empire that existed across Eurasia and North America from 1721, following the end of the Great Northern War, until the Republic was proclaimed by the Provisional Government that took power after the February Revolution of 1917.
Military history of Russia
The military history of the modern-day Russian Federation has antecedents involving the Rus' (who built Kiev), the Mongol invasion of the early 13th century, Russia's numerous wars against Turkey, against Poland, Lithuania and Sweden, the Seven Years' War, France (especially the Napoleonic Wars), and the Crimean War of 1853–1856. The 20th century saw two World wars and the Cold War. The military history of the Russian Federation itself began in 1991.