"Η μάχη τελείωσε με την ήττα τους."

[helmad]

I think 'end IN' works better in English.

[jaye16]

Yes, I've added it and marked it the best. It sounds really natural English. Many thanks.

[helmad]

Do you sleep? :-) I've never experienced such quick responses from a Duolingo moderator! Many thanks..

[bonbayel]

But now 'with' doesn't work. It's not wrong in English