After
Operation Barbarossa, the German invasion of the Soviet Union, began on 22 June, the trains carrying the division were rerouted to the
Western Front in the
Orsha area, where after unloading, it joined the
20th Army. Sviridov was appointed head of the Orsha Military Sector on the eastern bank of the
Dnieper on 29 June. Entering battle with the German
18th Infantry Division on 6 July, the division repulsed German attempts to cross the river until 18 July. On 12 July, German troops broke through the defensive line in a neighboring sector and captured
Smolensk four days later, surrounding part of the division. After making contact with the
19th Army headquarters, the division broke through and rejoined the army. Following the breakout, Sviridov was treated in a hospital for one and a half months, taking command of the
363rd Rifle Division, forming at
Kamyshlov in the
Ural Military District, during September. From 18 November, the 363rd was sent to the
Kalinin Front to join the
30th Army, operating on the
Rzhev direction during the Kalinin Defensive operation. During the same month, the division was transferred to the
Western Front and fought in the
Klin–Solnechnogorsk and
Rzhev–Vyazma Offensives. For its "successful completion of command tasks" in the offensives, the division was renamed the
22nd Guards Rifle Division on 22 March 1942, while Sviridov received the
Order of the Red Banner. The 22nd Guards was withdrawn to the
Reserve of the Supreme High Command in April and May, then sent to the
Northwestern Front's
53rd Army and fought with it until November against the German
16th Army holding the
Demyansk bridgehead. Sviridov was promoted to major general on 1 October. By 6 November 1942, the division was relocated to
Morshansk, where it reorganized as the
2nd Guards Mechanized Corps under his command. The corps fought on the
Stalingrad and
Southern Front. In December, Sviridov "skillfully commanded" the corps during the attack against German forces around
Kotelnikovo and Tormosin, then with other front units helped recapture
Novocherkassk and
Rostov-on-Don. He was promoted to
lieutenant general on 7 June 1943. From August 1943, the corps fought in the
Donbass,
Melitopol,
Bereznegovatoye–Snigeryovka, and
Odessa Offensives, during which it recaptured
Volnovakha,
Kakhovka, and
Berislav. For its "courage" in the recapture of
Nikolayev, the corps received the name of the city as an honorific, and Sviridov was awarded the
Order of Kutuzov, 1st class. The corps went on to fight in the advance into Hungary, Austria, and Czechoslovakia. In conjunction with the
46th Army of the
2nd Ukrainian Front, the corps helped capture
Budapest,
Tata, Nesmey,
Győr,
Vienna, and
Brno. For its "courage" in the
Siege of Budapest the 2nd Guards Mechanized received the name of the city as an honorific. For his "skillful organization and command of corps units and personal courage", Sviridov was made a
Hero of the Soviet Union and awarded the
Order of Lenin on 23 April 1945. == Postwar ==