All right, sounds like an interesting learning game. Sometimes you do get diced in an early battle (or three of them) and then that reverberates across the game. Especially if Japan is not declaring war on the Anglo-Americans, then there’s not much wiggle room for the UK & Russia to defend Moscow; a few bad battles or a few bad choices and Moscow can fall really early, and that’s all normal. I would have discussed the overall strategic situation with the Russian player, and explained why it made sense for them to sit tight and wait for British aid to arrive from Persia/India, but it’s hard playing just one country all day, and sometimes you just want to make a frigging attack, you know? It can be a lot more fun making one big attack and losing badly because of it than literally sitting around all day biding time and then having your friends argue about whether the resulting position was slightly favoring the Axis or slightly favoring the Allies.
I almost think you have to discuss strategies like that ahead of time, and figure out what countries to give people based on what their playstyle is. Especially in a game of Global with multiple newbies – if you’ve got a reckless attacker, give 'em the Germans or the Japanese. If you’ve got a timid turtle, give 'em the Russians or give 'em UK Pac + Anzac + China. That’s hard to suss out; a lot of people aren’t self-aware about what their playstyle is and may not admit to being a turtle even if they know it, but I think as the host you at least have to try to have that conversation.
As far as strategy, I think the British destroyers have to be built in Canada (SZ 106) when the Germans are doing an aggressive forward deployment with carrier and airbases. Building in Wales (SZ 109) is just a gift; it lets the Germans sink 'em for cheap. I’d also be very careful about moving into the Southern France sea zone when the Luftwaffe is still intact, because the risk-reward ratio is all wrong. If your fleet holds, then you deny Italy its Mare Nostrum NO for 1 turn (5 IPCs), and you get some additional boats into the Battle of the Atlantic at the cost of giving Italy a credible threat against Eastern Med targets like Egypt, Jordan, Crete, and Syria. It’s not clear that those results are better than just doing Taranto and sinking 2 Italian transports, which likely denies them the New Roman Empire NO (5 IPCs) for the rest of the game, and that’s what you get when everything goes well – as you saw, if it goes poorly against either the Italians or the Germans on a follow-up G2 attack, then you lose both your Atlantic and your Med fleets and you have very, very little to show for it. But you knew that. :)
Anyway, if Germany is buying an airbase and a carrier on G1, that’s the entire G1 economy, so they have no destroyers on the board. That means one interesting British purchase is submarines for the Atlantic! Hit the carrier, hit the battleship, hit the convoy zones in Norway and Normandy…just generally make life uncomfortable for the Kriegsmarine, and if you bait Germany into buying a couple of destroyers on top of the airbase and carrier, then at that point Russia should be rich enough to hold its own. Alternatively, if Germany retreats into the Baltic, the subs are useful against Italy in the Med.