My dad served under 'old blood and guts' Patton...He says it was Patton's guts and the unbelievable amount of the spilled blood of Patton's men that made Patton a success...
I don’t doubt that at all.
It is a terrible calculus to consider. And there are no guarantees.
Plus, if a thousand men are lost in a campaign, that is a thousand men. Rarely does a commander get credit for saving lives by being aggressive, because the other lives are not lost.