| • | 5th Mechanized Corps (Trans-Baikal Military District) |
♦ Commander – Major General of Tank Forces Il’ia Prokof’evich Alekseenko.
♦ Composition:
| ⋄ | 13th Tank Division – Colonel Fedor Ustinovich Grachev (killed in action in mid-July 1941). |
| ⋄ | 17th Tank Division – Colonel Ivan Petrovich Korchagin. |
| ⋄ | 109th Motorized Division – Colonel Nikolai Ivanovich Sidorenko. |
♦ Mobilization assignment – 16th Army, Western TVD.
♦ Actual deployments:
| ⋄ | 25 May-26 June 1941 – with 16th Army to Ostrug, Iziaslavl’, and Shepetovka, Kiev Special Military District. |
| ⋄ | 26-29 June 1941 – with 16th Army to Orsha, Western Front. |
| ⋄ | 4 July 1941 – reassigned to Western Front’s 20th Army. |
| ⋄ | 5 July 1941 – attacked toward Lepel’ under 20th Army control in coordination with 7th Mechanized Corps. |
| ⋄ | 19 July 1941 – 109th Motorized Division converted into 109th Rifle Division and, later, 304th Rifle Division. |
| ⋄ | 10 August 1941 – 13th Tank Division destroyed and disbanded. |
| ⋄ | Late August 1941 – 17th Tank Division, severely damaged in the Smolensk encirclement, converted into 126th Tank Brigade. |
♦ Strength on 6 July 1941
| ⋄ | Headquarters – 7 tanks (BTs) and 12 armored cars. |
| ⋄ | 13th Tank Division – 441 tanks (7 KVs, 10 T-34s, 238 BTs, 112 T-26s, 26 KhTs, and 48 T-37/38s) and 97 armored cars. 77 BT-7 and 32 T-26 tanks on 10 July. |
| ⋄ | 17th Tank Division – 413 tanks (237 BTs, 130 T-26s, 35 KhTs, and 11 T-37/38s) and 74 armored cars. |
| ⋄ | 109th Motorized Division – 113 tanks (113 BTs) and 11 armored cars. |
| ⋄ | 8th Motorcycle Regiment – 19 armored cars. |
| ⋄ | Total – 974 tanks (7 KVs, 10 T-34s, 595 BTs, 242 T-26s, 61 KhTs, and 59 T-37/38s) and 213 armored cars. |
| • | 7th Mechanized Corps (Moscow Military District) |
♦ Commander – Major General Vasilii Ivanovich Vinogradov.
♦ Composition:
| ⋄ | 14th Tank Division – Colonel Ivan Dmitrievich Vasil’ev. |
| ⋄ | 18th Tank Division – Major General of Tank Forces Feodor Timofeevich Rezimov. |
| ⋄ | 1st Motorized Division – Colonel Iakov Grigor’evich Kreizer. |
♦ Mobilization assignment – Strategic reserve.
♦ Actual deployments:
| ⋄ | 24 June 1941 – to Viaz’ma. |
| ⋄ | 26 June – to Smolensk and Orsha under 13th Army’s control. |
| ⋄ | 26 June – to Orsha under 20th Army’s control. |
| ⋄ | 28 June – to Rudnia under 20th Army’s control to block German advance on Smolensk. |
| ⋄ | 5 July – attack toward Lepel’ under 20th Army’s control in cooperation with 5th Mechanized Corps. |
♦ Strength on 6 July 1941
| ⋄ | 14th Tank Division – 293 tanks (24 KVs, 29 T-34s, 179 BTs, 20 T-26s, 17 KhTs, and 24 T-37/38s) and 55 armored cars. |
| ⋄ | 18th Tank Division – 272 tanks (10 KVs, 11 BTs, 193 T-26s, 54 KhTs, and 3 T-37/38s) and 46 armored cars. |
| ⋄ | 9th Motorcycle Regiment – 17 armored cars. |
| ⋄ | 251st Separate Signal Battalion – 6 tanks (6 BTs). |
| ⋄ | Total – 571 tanks (34 KVs, 29 T-34s, 196 BTs, 269 T-26s, 71 KhTs, and 27 T-37/38s) and 118 armored cars. |
| ⋄ | 1st Motorized Division (operating separately from 7th Mechanized Corps after 5 July) – 229 tanks (205 BTs and 24 T-37/38s) and 39 armored cars. |
| • | 17th Mechanized Corps (Minsk, Western Front) |
♦ Commander – Major General Mikhail Petrovich Petrov.
♦ Composition:
| ⋄ | 27th Tank Division – Colonel Aleksei Osipovich Akhmanov. |
| ⋄ | 36th Tank Division – Colonel Sergei Zakharovich Miroshnikov. |
| ⋄ | 209th Motorized Division – Colonel Aleksei Il’ich Murav’ev. |
♦ Deployments
| ⋄ | 4 July – ordered to Bobruisk region with 204th Airborne Brigade and 56th Rifle Division. |
| ⋄ | 5 July – subordinated to 21st Army. |
| ⋄ | Late July – withdrawn to Sukhinichi region under 4th Army and incorporated into 27th Tank Division. |
| ⋄ | 1 August – converted into 147th Tank Brigade. |
♦ Strength on 7 July 1941 – no armored vehicles.
| • | 20th Mechanized Corps (Baranovichi, Western Front) |
♦ Commander – Major General Andrei Grigor’evich Nikitin, Major General of Tank Forces Nikolai Denisovich Vedeneev on 21 July 1941.
♦ Composition:
| ⋄ | 26th Tank Division – Major General Viktor Timofeevich Obukhov. |
| ⋄ | 38th Tank Division – Colonel Sergei Ivanovich Kapustin. |
| ⋄ | 210th Motorized Division. |
♦ Deployments:
| ⋄ | 22-27 June – fought in the vicinity of Minsk. |
| ⋄ | 9-27 July – fought and destroyed in Mogilev encirclement. |
| ⋄ | 27-28 July – escaped the Mogilev encirclement with 100-200 men. |
♦ Strength on 7 July 1941
| ⋄ | 26th Tank Division – 3,000 men and 3 152mm howitzers. |
| ⋄ | 38th Tank Division – 3,800 men and 5 guns. |
| ⋄ | 210th Motorized Division – 5,000 men and 9 guns. |
| ⋄ | Total – 12,000 men, 27 guns, and no tanks. |
| • | 23rd Mechanized Corps (Orel Military District) |
♦ Commander – Major General Mikhail Akimovich Miasnikov.
♦ Composition:
| ⋄ | 48th Tank Division – Colonel Dmitrii Iakovlevich Iakovlev. |
| ⋄ | 51st Tank Division – Colonel Grigorii Georgievich Chernov. |
| ⋄ | 220th Motorized Division – Major General Nikifor Gordeevich Khoruzhenko. |
♦ Mobilization assignment – Strategic reserve.
♦ Actual deployments:
| ⋄ | 27 June 1941 – assigned to 24th Army, which was deploying westward from the Siberian Military District. |
| ⋄ | 1 July – assigned to Western Front’s 19th Army to replace 25th Mechanized Corps and deployed to Vitebsk and Liozno region. |
| ⋄ | 10 July – 51st Tank Division assigned to 31st Army, but its replacement, 57th Tank Division, never arrived. |
| ⋄ | 11 July – to Mogil’no and Berezino region in 19th Army’s reserve. |
♦ Strength on 29 June 1941
| ⋄ | 48th Tank Division – 104 tanks (3-T-34s and 101 T-26s). |
| ⋄ | 57th Tank Division – unknown. |
| ⋄ | 220th Motorized Division – unknown. |
| ⋄ | Total – 413 tanks (21 KVs and T-34s). |
| • | 25th Mechanized Corps (Khar’kov Military District) |
♦ Commander – Major General Semen Moiseevich Krivoshein.
♦ Composition:
| ⋄ | 50th Tank Division – Colonel Boris Sergeevich Bakharov. |
| ⋄ | 55th Tank Division – Colonel Vasilii Mikhailovich Badanov. |
| ⋄ | 219th Motorized Division – Major General Pavel Petrovich Korzun. |
♦ Mobilization assignment – Strategic reserve.
♦ Actual deployments:
| ⋄ | 24-29 June 1941 – deployed by rail to the Kiev region. |
| ⋄ | 30 June – assigned to 19th Army in Kiev region. |
| ⋄ | 3-8 July – transferred by rail to the Novozybkov region under 21st Army’s control. |
| ⋄ | 13 July – prepared to counterattack toward Bykhov and Bobruisk with 21st Army. |
♦ Strength on 1 July 1941
| ⋄ | 50th Tank Division – Unknown. |
| ⋄ | 55th Tank Division – Unknown. |
| ⋄ | Total – 163 tanks (6 BTs and 157 T-26s), reinforced by 64 T-34s by 13 July. |
| • | 26th Mechanized Corps (North Caucasus Military District) |
♦ Commander – Major General Nikolai Iakovlevich Kirichenko.
♦ Composition
| ⋄ | 52nd Tank Division – Colonel Grigorii Mikhailovich Mikhailov. |
| ⋄ | 56th Tank Division – Colonel Ivan Dmitrievich Illarionov. |
| ⋄ | 103rd Motorized Division – Major General Grigorii Timofeevich Timofeev, Lieutenant Colonel V. P Sokolov on 22 July, and Major General Ivan Ivanovich Birichev on 11 August. |
♦ Mobilization assignment – Strategic reserve.
♦ Actual deployments
| ⋄ | 28-29 June – dispatched to the Kiev region with 19th Army but diverted to 24th Army on 13 July. |
| ⋄ | 8-16 July – corps disbanded, with 52nd and 56th Tank Divisions converted to 101st and 102nd Tank Divisions and 103rd Motorized Division to 103rd Tank Division, all in 24th Army’s reserve. |
♦ Strength on 7 July – unknown.
| • | 27th Mechanized Corps (Central Asian Military District) |
♦ Commander – Major General Ivan Efimovich Petrov.
♦ Composition:
| ⋄ | 9th Tank Division – Colonel Vasilii Gerasimovich Burkov. |
| ⋄ | 53rd Tank Division – Colonel Aleksei Stepanovich Beloglazov. |
| ⋄ | 221st Motorized Division – Colonel Gersh Moiseevich Roitenberg. |
♦ Mobilization assignment – Strategic reserve.
♦ Actual deployments:
| ⋄ | 25 June – received alert order for deployment to the West beginning on 4 July. |
| ⋄ | 27 June – began rail movement to Voronezh. |
| ⋄ | 10 July – assigned to 28th Army and began moving to Kirov region. |
| ⋄ | 11-15 July – 27th Mechanized Corps was disbanded, with 9th Tank Division converted into 104th Tank Division, 53rd Tank Division into 105th Tank Division, and 221st Motorized Division into 106th Tank Division. All situated in the Spas-Demensk region subordinate to 28th Army. |
| ⋄ | 19 July – 106th Tank Division renamed 106th Motorized Division and moved to the Smolensk region. |
♦ Strength on 15 July 1941
| ⋄ | 104th Tank Division – 208 tanks (50 BT-7s, 19 BT-5s, 3 BT-2, and 136 T-26s) and 51 armored cars. |
| ⋄ | 53rd Tank Division – unknown. |
| ⋄ | Total – unknown. |
Note: KhTs means chemical [khimicheskaia] tanks equipped with flamethrowers or smoke generators.
Sources: Evgenii Drig, Mekhanizirovannye korpusa RKKA v boiu: Istorii avtobronetankovykh voisk Krasnoi Armii v 1940-1941 godakh [The RKKA’s Mechanized Corps in Battle: A history of the auto-armored forces of the Red Army in 1940-1941] (Moscow: Transkniga, 2005); and Il’ia Moshchansky and Ivan Khokhlov, “Protivostoianie: Smolenskoe srazhenie, 10 iiulia-10 sentiabria 1941 goda, chast’ 1” [Confrontation: the Battle of Smolensk, 10 July-10 September 1941, part 1], in Voennaia letopis’ [Military chronicle], 3, 2003, 4-7.