I did a Russian fleet one game. I had 2 turns of builds, carrier, destroyer transport twice.
Fleet was 2 carriers 2 fighters, 1 Tactical, 2 dd, 1 sub, 2 transports. I moved it to sz 111.
The German player built a second carrier to combat that threat.
German force was 2 carriers, 4 fighters, BB, CA.
I didn’t like the Russian odds. So I took Norway and kept 125 open, netting 11 extra ipcs.
I had originally hoped to help the USA fleet, but decided not to. Since I only spent 2 turns and was defensive, I didn’t lose Russia after UK fell.
My feelings about a USSR fleet were mixed. I had to try it once.
Other thoughts: (just a draft of an idea: not tested. This is a mental exercise, I need to set up board)
2 carriers sz127 save 5;
2 carriers, 1 dd save 2;
1 carrier, 2 transports spend 9 on infantry;
3 transports, 4 infantry and 1 artillery,
land units from then on.
Move strong force towards Finland: 10-12 land units by turn 3.
Meat and Potatoes:(moves)
Turn 3 pull the UK planes out of London (5 fighters, 1 tactical), land on sz101 USA carriers (as they entered war turn 3).
Build 4 UK subs, split between 110 and 109 if Germany has a DD.
Russia turn 4: Move 5 carriers, 1 DD, 1 Sub,2 transports (2art,2inf) to sz 112. Take Norway (first) and or Denmark. Take Finland in force.
If Germany blocks at 126, you clear with air/sub(if not going to convoy later) and land 1 transport there to seize Norway, then noncombat fleet to 112 Keep 1 transport and 2 units there as well for later. You can stage some fleet at 126 if preferred.
UK 4. Attack German fleet with 4 subs, and 5 air units. Land 5+1(France) air units on Russian carriers from USA carriers after they move to sz 91 (surprise) USA also moves 1 dd to 104 as blocker. You may now sink the German fleet as they may not have seen the USA carrier moving planes in range.
Now Germany has to hit 5 carriers with up to 9 planes and a DD to get Norway back. They likely lost their fleet to UK counter-assault. Without transports, Norway is Russian for 2 turns.
If German fleet survives, its a hard fight against the USSR fleet.
(Germany assumes no air lost to Sea lion: 11 air, carrier, BB and CA versus 5 carriers, 1 DD, 1 sub and 9 air. I see USSR winning.)
Lets assume this: UK falls, large German force stuck on London, Germany cannot turn fleet (if alive) around to hit USSR as way is blocked.
Germany is forced to go Land route, USSR has not built much force and some is diverted to Finland.
Less likely: Germany could take London with a smaller force, save some transports inside for fight with Norway later in which case, USSR could move fleet to sz91 for Italian convoy raiding later.
Germany could build a navy turn 4, you would have to stage in sz 125 on turn 3 to prevent this and be bait??
Options this presents:
USSR fleet threatens West Germany directly and by providing cover for USA transports. (USSR fleet is the second “anchor” fleet USA needs to maneuver North). This permits a turn 5 assault on W. Germany/Norway by USA forces.
Alternative threat: Turn 5: USSR can take W. Germany(5 transports), [Holland or Normandy 1-2 transports], USA and UK can land air and land units before Italy can hit, giving USSR the ability to produce next to France or Germany.
Its risky, if Germany plans on building navy turn 4 or grabs London turn 3 your plan is in jeopardy. Fleet could still assist USA later.
Germany could scrap Sea Lion and go Russia first, but then London is still yours and USSR fleet is likely still alive.
Its crazy, but that’s why I like it. It even has a sneak assault on the German navy potential.
It could play out many ways, USSR could be left too weak, Shrewd German could counter effectively if they predict your plan.