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Source is FM 100-2-3 Soviet Troops, Organization and Equipment

A Soviet Front consists of a headquarters, several subordinate armies and supporting elements. A typical front will have 3-4 combined arms armies and 1-2 tank armies assigned.

Artillery support assigned to the front comes in the form of an artillery division and an attached heavy artillery brigade (from RVGK-Reserve of Supreme High Command).

The artillery division consists of 2 gun regts/bdes, 2 how regts/bdes, 1-2 antitank regts/bdes and a MRL brigade, in addition, these units may be made up of either 18-gun bns or 24-gun battalions, resulting in the following equipment totals:

130mm Field Guns M-46 or 152mm Field Guns M-1976 or 152mm SP Guns 2S5:
Regiment: 108-144
Brigade: 144-192
152mm Howitzer D-20 or 152mm SP Howitzer 2S3:
Regiment: 108-144
Brigade: 144-192
100mm Antitank Gun T-12/MT-12 or 125mm Antitank Gun:
Regiment: 36
Brigade: 48
ATGM Launcher Vehicle, BRDM-2/AT-3 or BRDM-2/AT-5
Regiment: 27
Brigade: 36
122mm MRL, BM-21 or 220 MRL, BM-27:
Brigade: 72

The Heavy Artillery Brigade consists of 2 battalions of heavy artillery and 2 battalions of heavy mortars, resulting in the following equipment totals:

203mm Howitzer B-4M or 203mm SP Gun M-1975: 24
240mm Mortar M-204 or 240mm SP Mortar M-1975: 24

The Combined Arms Army artillery assets consists of a Artillery Regiment/Brigade and a MRL Regiment. The Tank Army normally has no additional artillery attached, although (depending on its mission) it may have a artillery regiment and a MRL regiment attached.

The Artillery Regiment consists of 2 gun and 1 howitzer battalions, the Artillery brigade consists of 2 gun and 2 howitzer battalions. Like the artillery divisions, 18 and 24-tube battalions are available, resulting in the following equipment:
130mm Field Gun M-46 or 152mm Field Gun M-1976 or 152mm SP Gun 2S5:
Regiment: 36-48
Brigade: 36-48
152mm Howitzer D-20 or 152mm SP Howitzer 2S3: 18-24 or 36-48

The MRL Regiment consists of 3 MRL battalions, equipped as follows:
122mm MRL BM-21 or 220mm MRL BM-27: 54

The combined arms army consists of 2-4 Motor Rifle Divisions and 1-2 Tank Divisions. A Tank Army consists of 2-4 Tank Divisions and 1-2 Motor Rifle Divisions.

The Motor Rifle/Tank Division has an Artillery Regiment, consisting of 2 towed and 1 SP howitzer battalions and a MRL battalion.

The towed howitzer battalions each consist of 18 122mm Howitzer D-30.

The SP howitzer battalion consists of 18 152mm SP Howitzer 2S3.

The MRL battalion consists of 18 122mm MRL BM-21

The Motor Rifle Division also has 1 BMP and 2 BTR-equipped Motor Rifle and 1 Tank Regiments, each has a organic howitzer battalion. The BMP/Tank battalions have each 18 122mm SP Howitzers 2S1, the BTR battalions each have 18 122mm Howitzer D-30.

The Tank Division has 3 Tank and 1 BMP regiments, each with an organiz battalion of 18 122mm SP Howitzer 2S1.

There is a saying in the Red Army, that the only God it worships is Artillery and as you can see from the above, it posses a lot of Artillery!