Notes:

This is a somewhat obscure war, mostly because people remember the first (way less bloody) one in which the Ethiopians won.

This time it was a full blown war, not just a garrison, and the Ethiopian emperor ordered every capable of fighting man to go and fight a war that they couldn't possibly win. And by "every fighting capable man" it means literally everyone. Only very old people, children, pregnant women and disabled were saved from being drafted. They were forced to fight by any means necessary.
The result is that absurd number of dead Ethiopians… The Italian rule didn't last long at all, and part of the colonization effort was lost due to the fact that WW2 started and Ethiopia fell into British hands afterwards

Alongside the Italians, there were high numbers of Somali veterans and Eritrean troops helping.
The Ethiopians were left alone on the field, but Nazi Germany supplied them with weapons