He was a military commander and organizer of the 1st Cossack Volunteer Cavalry Regiment at the stanitsa Ust-Medveditskaya.
At the start of World War I Alexei Kravtzov was put in charge of the 57th Don Cossacks Regiment.
During the opening stages of Russian Civil War Kravtzov served in the Don Army.
He organized 1st Cossack Volunteer Cavalry Regiment in March 1918 at the stanitsa Ust-Medveditskaya,[1] and was commissioned as a colonel in the Don Army.
He shot himself not to fall into the Bolshevik hands wounded during the Battle of Loznoye from December 22 to December 30, 1918, where his regiment save by manoeuvre corps of Don Army under command of General Alexnder V.