@FranceNeedsMorePower
I mean, I’m no expert in that regard. My whole ethos is “a penny saved is a penny earned.”
My general experience of playing as the western Allies in these types of games is actually about projecting a large enough force that your enemy won’t attack you; if preserving French units helps with that, then all the better.
The whole thing with the western Allies is that they need to ramp up and leverage their economies, but it’s not simply enough to out-spend your opponent; you have to actually be able to out-unit them, too.
AFAICT this sort of thinking lines up with one of the more well-considered strategy breakdowns for Global40, which I was pointed towards by more than one person:
https://www.axisandallies.org/forums/post/1397227
credit to @AndrewAAGamer for this^^^