Zipporah
christian
We are not told in the Bible about Circumcision and the Midianites. You might find something in Midianite history.
Genesis 37:36 And the Midianites sold him into Egypt unto Potiphar, an officer of Pharaoh's, and captain of the guard.
The Israelites, led by Gideon, defeated the Midianites in the Old Testament story found in the Book of Judges. It took place in the battle of Gideon's 300 against the massive Midianite army.
Gideon
Moses
The Midianites were a nomadic people who inhabited the region east of the Jordan River. They were often hostile towards the Israelites, leading to conflicts between the two groups in the Bible.
defeat the Midianites;wipe them out
The Midianites
It may have started with humans killing the Neanderthals. The Old Testament speaks of the destruction of the Midianites in the 2nd century BC.
They fought with or harassed the Israelites on several occasions. Numbers ch.25, Judges ch.6, and elsewhere.