The first question regarding any Allied strategy are its objectives. Equally as important to either killing Germany or Japan, there is always another main objective which is to ensure the survival of Russia, at least until either G or J falls. And it is possible to win the game by only focusing on keeping Russia alive and outproducing the Axis (which requires securing Africa) - eventually the Axis player will concede as the advantage in units and income gets bigger for the Allies.
The trick is to be able to achieve both objectives, which requires a lot of things.
@Granada:
2. Start pressuring germany with western allies ASAP. There are various schools of thought on how this should achieved. Some people would use Africa, which is very easy but really slow, some people would use WEU, some people would operate US and UK convoys seperately. My system of choice is an old idea of caspian sub using the UK, NOR, KAR, EE push which has the advantage of increasing the pressure gradually and both US and UK ships and units operating in synchronicity, the disadvantages might be that it does not allow for much flexibility, it is not esspecially quick and it is not that as easy to master as it is to write about.
The UK-NOR-KAR-EE push is still one of the best options but the Germans can counter/delay it by having a large stack on Karelia that the Allies can’t defeat or creating a dead zone on Karelia, if the 3 Allies don’t coordinate their moves together (i.e. Russian armor moving to Karelia to reinforce the UK/US stack landed there).
A mass landing on WE may also be a tactic if the Germans can’t counterattack it. But usually this will mean that G pull back all of its armor to deal with it so the UK/US need to keep landing enough units to secure the beachhead. The problem with this tactic is that on my Spring 1942 games the Germans are usually more focused in defending WE against any landings than Revised.
Africa are usually too slow and a waste of units - they usually will be stuck on Egypt and unable to advance anymore due to the Japanese fleet/army. Plus if you want to kill Germany then it would take forever for those units to ever reach it.
And usually S.Eur is a dead end. It is usually not possible for both the UK/US to sustain a combined landing of both on every turn (due to a lack of UK transports) and it can be targeted by German units on WE, Germany, Balkans, EE and Ukraine.
Finally, any land units used for both tactics won’t reinforce Russia, which is another factor to consider.
3. Secure Africa. Some people use the black sea sub RR1. While I have not decided what is the best way to counter that move yet, my intuition is against it because while Germany may really be pushed of africa it will be able to keep the western allies longer from europe due to sinking of the UK BB while being able to stack ukr G1 most of the times.
So i still rather would go R R1 after norway and start the UK push to Europe on UK1, and use combined efforts of us and UK to secure africa, than using russians for this. But I admit it might just be a matter of taste.
Secure Africa is always a secondary objective for both the Allies or the Axis. Use too many units and you’ll be diverting a lot of resources away from the 2 Allied objectives mentioned before. For instance a counter I use against a R1 sub buy is for a 5 inf, 5 arm buy for Germany and a push with all available units to Karelia on G1 (no SZ2 attack though), creating a stack that Russia will have a big problem attacking and forcing it to reinforce WRus or losing it.