Here are some support options and senior leader types.
Above are two Maxim MMG teams on either side of an anti-tank gun. In Chain of Command, such support weapons have a team of five to service the weapon. With some nations, support weapons like this come with an attached Junior Leader, but this isn't the case with the Soviets.
The anti-tank gun is the M1937 45mm L46 gun, based upon the German PaK 36 3.7 mm, which the USSR acquired from Germany before the war under licence. The German gun was also the basis for an earlier Soviet A/T gun, the 3.7cm M1930 which was used early on in the war but, being obsolete by 1939 was no longer in production, so I won't be using it as one of those.
Next, here are some leaders;
On the left is a Ranking Senior Leader, with a radio operator. He will be used in games of Big Coc. Next to him, with blue breeches is a Commissar, whose role in games will vary according to the period and the scenario.
The two figures sharing a base in front were originally going to represent an on-table FOO, but in CoC the Russians don't have access to in game artillery or mortar support, something I'd forgotten, so I'll probably use the base for something scenario-specific, or maybe as a Jump Off Point.
Once again, these are all Peter Pig 15mm figures, painted as for the infantry platoon I posted previously, apart from the RSL, who I've given a green uniform.