In reply to DerwentDiluted:
All very interesting stuff.
> They also developed some proper behemoth things such as the Elefant and the Maus, I can't help but wonder, if they had just focussed on making lots of Panthers and Tigers (and ME262 fighters) rather than developing many weird things, how things would have turned out.
I think the problem was as much production of the Panthers and Tigers, they were all fairly technically complex and took significant man hours and material to produce, both of which was in ever declining supply in Germany from 1941 onwards.
And just the sheer capacity for production that the Allies had, principally the Soviets until D-day, at least in terms of fighting vehicles and tanks. Although the US provided an absolutely phenomenal number of trucks (nearly half a million IIRC) under lend lease, not to mention uniforms, boots and rations for the Red Army. And then if you look at tank production numbers, the Soviets churned out far more tanks (largely T34s) than the Nazis alone, disregarding the Allied tank numbers.
The vanity projects like the Maus were definitely a diversion, but I don't think they sucked up enough resources to really make a difference to the outcome.
Really, they lost the war the moment operation Barbarossa failed, not that it was obvious at the time.