en_tn_condensed/jdg/08/01.md

What is this you have done to us?

The people of the tribe of Ephraim were rebuking Gideon with this rhetorical question for not including them in his army. This can be expressed as a statement. Alternate translation: "You have not treated us fairly." (See: rc://en/ta/man/translate/figs-rquestion)

against Midian

Here "Midian" represents the Midianite army. (See: rc://en/ta/man/translate/figs-metonymy)

they had a violent argument with him

they argued angrily with him" or "they rebuked him severely"