John Gill Commentary Judges 9:55

"And when the men of Israel saw that Abimelech was dead, they departed every man unto his place." — Judges 9:55 (ASV)

And when the men of Israel saw that Abimelech was dead
That is, those that were with him, the men of his army, who were all Israelites:

they departed every man to his place ;
disbanded themselves, and went everyone to their own home, and so the inhabitants of Thebez escaped the vengeance of Abimelech.