Replacement rate for frontline units in WW2

[StuFL]

I'm pretty sure the only hard and fast rule about replenishment rate is Not Fast Enough.

There's an appropriate Bill Mauldin panel about replacements, where the supply sergeant is telling his captain "So, I told Company K they'd just have to solve their own replacement problem." Meanwhile there's a pair of hands reaching through the back of the tent ready to grab the sergeant.