I mean, it was a good read while I was bored at work and there are useful tips strewn throughout, but it seems to be written from the direction of someone who is going to follow the historical timeline with war kicking off in 1939.
Because if I start building factories as Canada to attack the US, I finish 1 or maybe 2 before it's gank time. 2 if I research production, when I find it way more valuable to start on research, dispersed industry and sub research.
But if you are going to play the game straight, it's great, thank you.
Also, in that first war...I kind of like to get units out faster, not wait for artillery to complete or whatever support equipment, so much like the US, get the troops out, worry about equipment later.