Well yeah they beat the French on May 5th but keep in mind that the French came back and beat them like a drum. And it wouldn't have happened at all if Juarez was able to pay back the loans Mexico had taken out or if France had been willing to renegotiate like Britain and Spain.
Alright; where are you getting your info on this conflict, or where can I read more? I continually get the revised we kicked butt version instead of the truth.