Jim,
it was not "well led"

The military historians say you are wrong, so who cares what you think?
You are only informed by political dogma.
You reject all the new knowledge of the last thirty years.

If you believe it was well led you would be able to explain it.

I can Jim.
The war had to be fought (read the history books).
The war could not be fought without incurring heavy losses (read the history books).
Had the army not been well led, the losses would have been even heavier (as they were for all the others) and we would not have won.

Instead of political theorising read ANY HISTORY written in recent decades.
They will all tell you what I have been telling you.
Reading those histories is how I know this stuff while you wallow in ignorance and make ridiculous political pronouncements about an event you actually know nothing about.