 Complete the following phrase:  At the beginning of Operation Barbarossa on 22 June 1941, the 87th was part of the 5th Army, which became part of the Southwestern Front formed from the Kiev Special Military District, based in the area of Vladimir-Volynsky. The division was one of the first struck by the German advance, participating in the border battles. Vasilyev became commander of the division after division commander Major General Filipp Alyabushev was killed after stumbling on a German unit while reconnoitering a highway crossing site on 25 June. From 7 July to 20 August it was directly subordinated to the front command, then joined the 37th Army for the 