Actually, during the Mandalorian Wars, the Cathar people of the home planet were driven collectively into the sea and the planet was bombed until the people there were nearly completely wiped out.  They did not kill them "to a man".<br/><br/>During this period of expansionism, the Mandalorian Neo-Crusaders conquered the planet Cathar. The operation was masterminded by Mandalore the Ultimate's chief strategist, Cassus Fett, who wished to exact vengeance on the native Cathar species for opposing the Mandalorians in past conflicts. In 3,973 BBY, Fett's forces massacred the Cathar, driving the species to the brink of extinction.<br/><br/>This from:<br/><br/>http://starwars.wikia.com/wiki/Mandalorian_Wars (http://starwars.wikia.com/wiki/Mandalorian_Wars)<br/><br/>Unless the historical records have been changed to reflect otherwise.