What does Judges 20:36 mean?

The people of Benjamin finally realized they were losing. The Israelites had pulled back, drawing Benjamin’s fighters away from the city, and set up an ambush. Judges 20:36 - Modern Text Bible

(This verse marks the turning point in the battle. The Benjaminites see that the tide has turned against them because the Israelites used a strategy to lure them out and trap them.)