The Second Battle of Mon Calamari was fought between the Reavers, the Jedi of the Mon Calamari Jedi Academy, the Mandalorian Protectors, and the Fifth Republic. The battle brought an end to the Fifth Republic's Senate and the Academy. There were no survivors for the Jedi or the populace. Fortunately, Yandreos Ordo and his Mandalorian troops were able to get word out to the rest of the Fifth Republic and escape.