|Born||18 January 1897|
|Died||9 April 1965 (aged 68)|
|Commands held||6th Cavalry Division|
31st Rifle Corps
13th Guards Corps
2nd Rifle Corps
|Awards||Hero of the Soviet Union|
From 1937 Lopatin was appointed commander of a cavalry division. He began the Great Patriotic War in the rank of General-Major, and was promoted to the rank of General-Lieutenant 1942.
During the war he commanded the 31st Rifle Corps of the Southwestern Front (from October 1940), 9th Army (from July 1941), 37th Army (October 1941 – June 1942), 62nd Army (from August 1942) with the mission, to defend Stalingrad, 34th Army (from October 1942), 11th Army (during March - July 1943), and 20th Army (September - October 1943).
He also completed the Higher academic course at the Military Academy of the General Staff in 1947.
After the war Lopatin commanded a Rifle Corps, and occupied high-ranking positions in Staffs of several Military Districts before retiring in 1954.