Rheinstorff,
Whilst struggling to see what relevance 1945 is to the British Army's failure to be able to recruit, your well made points above provoke thought about Hitler and 1941. I am not sure that whatever tactics Hitler adopted would have overcome the massive imbalance in ultimate numbers that the Soviets could employ against him. It may have taken longer, but once the initial thrust had been absorbed the Germans were on the back foot strategically within a pretty short time, and come what may he still had General Winter to fight at least twice, possible more. He may have won a tactical victory and taken Moscow, but then the Soviets still had massive resource that they were able to bring to bear, and Hitler simply did not. Plus he was fighting elsewhere against the British Empire and the USA, that was never going to be doable.