Killercraft were the Race's fighter aircraft, comparable to, but far more advanced than, the jet technology being developed in the aborted World War II. The Race's killercraft were extremely effective in securing dominance over the skies. In the early days of the war, the Killercraft were able to totally destroy most a human air force at every engagement. One missile could go 10 times faster than the best human fighter. However, the Race had anticipated an easy victory. There were not enough killercraft to sustain the war. Also the Race's tactics of using killercraft were poor in comparison to actual aerial combat, given the fact that the Race had only two known battles in their thousand year-long history.