The 15th Infantry Division was an infantry formation of the Russian Imperial Army that existed in various formations from the early 19th century until the end of World War I and the Russian Revolution which dismantled the Tsarist autocracy and led to the rise of what?
Russian Revolution The Russian Revolution was a pair of revolutions in Russia in 1917 which dismantled the Tsarist autocracy and led to the rise of the Soviet Union. The Russian Empire collapsed with the abdication of Emperor Nicholas II and the old regime was replaced by a provisional government during the first revolution of February 1917 (March in the Gregorian calendar; the older Julian calendar was in use in Russia at the time). Alongside it arose grassroots community assemblies (called 'soviets') which contended for authority. In the second revolution that October, the Provisional Government was toppled and all power was given to the soviets.
45th Reserve Division (German Empire) The 45th Reserve Division ("45. Reserve-Division") was a unit of the Imperial German Army in World War I. The division was formed in August 1914 and organized over the next two months. It was part of the first wave of new divisions formed at the outset of World War I, which were numbered the 43rd through 54th Reserve Divisions. The division was disbanded in 1919 during the demobilization of the German Army after World War I. The division was part of XXIII Reserve Corps and was recruited primarily in the Prussian provinces of Pomerania and West Prussia, but the 212th Reserve Infantry Regiment was a Hanseatic regiment, raised in Hamburg and Bremen.