SU-76&SU-122 mixed regiments (1942-43)
SU-85, SU-100 regiments
Separate SP Gun Battalion of rifle division (SU-76)
First two SP gun regiments were formed by Staff #08/158 in Dec. '42 (1433rd,1434th)
Was introduced in the beginning of 1943
Was introduced in the spring 1943
Was introduced in April '43.
A Heavy SP gun regiments used Staff #010/454 differed from the previous one by introducing KV commander's tank and BA-64 recon armored car.
In the middle of 1943 in all SP regiments the number of men was reduced.
Was introduced in October '43.
Was introduced in the autumn '43
Was introduced in October '43. Till Feb. '44 all SU-76 regiments were reequipped by this staff.
In the beginning of 1944 was introduced the Staff #04/434 (184 men, 13 SU-76). It differed from the #05/568 (introduced a bit later) by the number of SP guns in a battery (4 in #04/434 vs. 5 in #04/568)
Such battalions were included into several dozens of rifle and airborne divisions instead of common anti-tank battalions. (It should be mentioned that they had the same numbers as anti-tank battalions). Besides such formations were included in rifle divisions of Polish troops.
As at the beginning of 1944 the number of separate SP guns regiments exceeded 200 it caused the formation of light SP guns brigades.
Introduced in Jan. '44.
According to this Staff were formed the next Light SP gun SCCR Brigades:
6th (former 94th tank brigade);
8th (former 15th tank brigade);
12th (former 86th tank brigade);
14 (former 140th tank brigade).
6th - since Feb., 1944 into the 6th Tank Army of the 2nd Ukrain Front. Was reorginised in 51th Guards SP gun Brigade
8th - since Jan., 1944 into Belorussian Front. Finished the war in the 52th Army of the 1st Ukrain Front
12th - since Apr., 1944 into the 69th Army of the 1st Belorussian Front.
14th - Didn't took part in the war.
Three brigades were equipped with lend-lease SP guns T-48 (SU-57 in Soviet classification):
16th (former 60th Tank Brigade); Staff #010/408 (3 Battalions (3 batteries in each) 20 SU-57 + 5 Vallentine IX tanks)
19th (former 196th Tank Brigade); Staff #010/508 (Differed from #010/408 only by replacement of Vallentines to SU-57)
22th (former 236th Tank Brigade); Staff #010/408 (3 Battalions (3 batteries in each) 20 SU-57 + 5 Vallentine IX tanks)
Subordination (All brigades operated since July, 7'44 on the 1st Ukrain Front):
16th - into the 3rd Guards Tank Army;
19th - into the 1st Guards Tank Army;
22th - was directly subordinated to the Front Headquarters. Finished the war into the 4th Guards Army as 70th Guards SP Gun Brigade.
Was introduced in December '44.
According to this staff were formed the next Medium SP guns SCCR Brigades:
207th (former 1st Separate Tank Brigade);
208th (former 118th Separate Tank Brigade);
209th (former 209th Tank Brigade)
207th - since Feb. '45 - 2nd Ukrain Front. Finished the war into 3rd Ukrain Front;
208th - since Feb, '45 - 2nd Ukrain Front;
209th - since Feb. '45 - 3rd Ukrain Front.
231th - Didn't took part in German campaign.
The only Heavy SP gun SCCR Brigade was 66th Guards Heavy SP gun Brigade. It was formed using troops of 143th Separate Tank Brigade in Mar. 01'45. It's structure was equal to the Staff of medium tank brigades. It was equipped with ISU-122. (1804 men, 65 ISU-122, 3 SU-76).
SCCR - Supreme Command-in-Chief Reserve
SP - Self-Propelled