 While "Before the Great Collapse" was the single's official A-Side, the B-Side track "On the Eve of War" was "Legacy of Blood's" lead single.Like their previous album's lead single, "Animal Rap", the single contains two mixes of the song, subtitled "On the Eve of War (Julio César Chávez Mix)" and "On the Eve of War (Meldrick Taylor Mix)", referencing the rivalry between the two boxers.The former features a symphonic sample, taken from the track "Palladio I - Allegretto" by Karl Jenkins.