So first I must say that I owe a lot to the Battle Order website and channel for inspiring me. Go check it out. Anyway, the GENFORCE-Mobile document, while a tour de force overall, has surprisingly little on the absolute smallest unit tactics. It does say that the basic and mobile forces do use very similar tactics (it’s just the latter have more training on them). Anyway, there isn’t much to say for the high-intensity doctrine. Primarily use lines, squads are unitary without teams, the vehicle commander doubles as squad leader, and that’s that.
The table of orders and equipment does (by virtue of looking at quantities of in a platoon), have one RPK variant and one RPG variant (marked as an RPG-29 in that example) per squad in the mobile forces, similar to historical practice. The company weapons platoon has an array of light ATGMs (marked as Metis, but those would probably be superseded) and PKM belt-fed machine guns.
(Strangely, the early 199X OPFOR squad is actually weaker on paper dismounted than its predecessors, with only one magazine machine gun instead of two belt-fed ones).
The legacy regular army, basic forces, or whatever you call them uses this doctrine relatively unchanged. But what about the new ones?
I had the Sovereign Union’s mobile corps using tank-based IFVs. There have been similar attempts in actual history, yet I figured these would be the more interesting. Basically the priorities shift a lot here. The historical BMP-3 is skewed in exactly the wrong direction. Instead of a glass cannon packed with all kinds of boom-makers, the focus is on shielding the newly-important resource with tank-level armor.
So in this timeline the BMP-3 is one of those things that only sees small amounts of use in its home country, but nonetheless achieves success on the export market. The Mobile Corps in All Union primarily rode into Romania with either BMP-2s or IFVs based on existing tank platforms. Whereas the historical T-64 APC proposals were an act of desperation, these have a deliberate goal of more protection and mass production ability, similar to the Israeli tank-APCs of real life.
Two real Soviet surplus IFV proposals are two from Ukraine, the circa 36 ton “Vavilon” on the T-64 chassis and the 46 ton “Berserk” on the T-84 (upgraded T-80) one. Apart from trading protection (the Vavilon was advertised as having STANAG 6 30mm AP protection and being able to withstand a 125mm round from 500 meters, likely against the front) for weight and logistical issues, the armament is pretty standard IFV fare: A 30mm autocannon, various machine guns and grenade launchers, and ATGMs. Crew of both is three for the vehicle itself and up to eight dismounts.
Now for the fun part.
Option A: 7+3 Unitary
Composition: Squad leader/vehicle commander (rifle/PDW), vehicle driver (PDW), vehicle gunner (PDW), 1-2x machine gunner (LMG), 1x rocket launcher (RPG), 1x assistant (rifle+RPG ammo), 1x rifle grenadier (self explanatory), 2-3x riflemen (rifle). One of the riflemen could be a “deputy leader” who commands dismounts when the commander stays with the vehicle.
This is the smallest and most conservative organization. It’s designed to duplicate the BMP procedure of having one empty paper-strength seat so that platoon/company troops can ride along. It fights like a standard unitary squad.
Option B: 8+3 Unitary
Composition: Squad leader/vehicle commander (rifle/PDW), vehicle driver (PDW), vehicle gunner (PDW), deputy commander (rifle), 2x machine gunner (LMG), 0-1x marksman (DMR), 1x rocket launcher (RPG), 1x assistant (rifle+RPG ammo), 2-3x riflemen (rifle, possibly one with underbarrel).
This also fights as a unitary squad, although a marksman is moved to squad level and the deputy commander who controls the dismounts is a permanent table position. Still fights as a simple unitary squad. Marksman is optional
Option C: 4-4-3 Fireteam
Composition: Squad leader/vehicle commander (rifle/PDW), vehicle driver (PDW), vehicle gunner (PDW). Fireteam A: Team leader (rifle), team machine gunner (LMG), team launcher (RPG), rifleman (rifle, ammo for MG/RPG). Fireteam B: Team Leader (rifle), team machine gunner (LMG), team launcher (RPG), rifleman (rifle, ammo)
This is a massive divergence and features the dawn of the fireteam, with two four-man elements and two RPG launchers (with one of the riflemen possibly a marksman). Naturally, more advanced formations and dismounted maneuvers are used.
My personal choice for the sake of the All Union story would be Option B. It’s still similar enough to be comfortable, informal task-organized teams can still easily be formed if need be, but is also more advanced. Not just having a squad marksman but in having a specific dismount commander, which makes it easier for the APC to act as part of a separate “armored group“.