Compañero de fatigas

[ROBINDESBOIS]

In English?
A compañero de fatigas, is sb who does the same job or is in the same situation as you, usually enduring and painful situations or jobs.

[Perikles]

Various words ending in -mate:

workmate
classmate
schoolmate
roommate
teemmate
flatmate

but none of these fit.
Partner in adversity? :thinking:

[Ambarina]

Birds of a feather...perhaps?

[Perikles]

Birds of a feather...perhaps?I don't think that's anywhere near, to be honest. :)

[ROBINDESBOIS]

I think partner in adversity is was I was looking for.

[LibraryLady]

brother in arms ?

[hermit]

"Brother in arms", "comrade-in-arms" seem just right to me...

[pjt33]

teammate
¿Falta de café?

[Perikles]

¿Falta de café?That was just before my coffee when everything was still blurred - how did you know? :o