The troops made a desperate 'last-ditch' effort to keep the town from being captured.
The negotiations were a 'last-ditch' attempt to prevent a labor strike.
His girlfriend 'ditched' him. = He 'got ditched' by his girlfriend.
(..) Okay. Blondie, stay here and baby-sit them two. White and Pink, take a car each. I'll follow you. You ditch 'em. Pick up the stones. While I'm followin' you, I'll arrange some sort of a doctor for our friend. You can't leave these guys here with him. (..)1992 Reservoir Dogs