Abraham the person who thought up that cunning plan was none other than 25 star General Zapp Brannigan!
"You see, Killbots have a preset kill limit. Knowing their weakness, I sent wave after wave of my own men at them, until they reached their limit and shut down."
"Men, you're lucky men. Soon you'll all be fighting for your planet. Many of you will be dying for your planet. A few of you will be forced through a fine mesh screen for your planet. They will be the luckiest of all."