Custer: "Sitting Bull is in for the ass-kicking of a lifetime."
Lee: "Once General Longstreet quits whining he and his men should have no problem taking Cemetery Hill."
Montgomery: "Capturing these bridges from the Germans will be a snap."
Maginot: "My system of super-forts will stop any Nazi attack."
Moctezuema: "Cortes and his men will only be in town for a while."
You get the idea.