bow and arrow

<sup>"With a bow and arrow, the tension in an arched bough of wood is exploited to propel a missile for great distances and slash through barriers. The inventor of this device first had to grasp the paradox that the deadly arrow must be pulled back toward one's own heart in order to strike the heart of the opponent, and that the more it is drawn toward oneself, the more distant an adversary it can reach."

source

retreat---> catapult</sup>