Since August 1930 – commander of the 5th Separate Territorial Artillery Battalion of the Volga Military District.

Since November 1931 – commander and commissar of the 57th Ural Artillery Regiment of the Transbaikal Military District.

The commander of the artillery of the army, commander Mikhail Parsegov, constantly traveled from unit to unit, taught artillerymen to scout, detect and destroy enemy bunkers, mine traps and other fortifications and fire weapons.

The artillery units of the 7th Army under the command of Mikhail Parsegov destroyed many enemy fortifications and firing points, paving the way for the advance of infantry.

At the beginning of March 1940, after powerful and lengthy artillery preparation, the Mannerheim Defensive Line was broken.

By a decree of the Presidium of the Supreme Council of the Soviet Union of 21 March 1940,[2] for the exemplary performance of the combat missions of the command and the courage and heroism shown to it, the commander Mikhail Artemyevich Parsegov was awarded the title Hero of the Soviet Union with the award of the Order of Lenin and the Golden Star medal.

In April 1940, Parsegov participated in a meeting at the Central Committee of the All-Union Communist Party (Bolsheviks) of the commanding staff on the collection of experience in military operations against Finland, where he expressed dissatisfaction with the work of intelligence and insufficient training of reserve officers, and also noted the crucial role of artillery in breaking through fortified areas.

At a meeting of senior management of the Red Army on 23–31 December 1940, he expressed dissatisfaction with the training of commanders.

At the outbreak of the Great Patriotic War, Parsegov was serving as the chief of artillery of the Southwestern Front (that is, in the same position).

Covering the retreat of the Soviet troops, the artillerymen under the able command of Parsegov caused considerable damage to the enemy's equipment and manpower.

During the counterattack near Moscow, he skillfully planned and clearly guided the artillery of the forces of the right wing of the Southwestern Front in the Yelets Offensive Operation.

In this position, Parsegov made a lot of efforts to strengthen the combat effectiveness of the artillery units of the Far Eastern Front, applying in practice all his knowledge and experience of several wars.

His troops participated in the liberation of Harbin and other Chinese cities and towns, as well as southern Sakhalin and the Kuril Islands.