Rule 20

Air or missile attacks must be conducted in accordance with those feasible precautions required under Section G of this Manual designed to avoid – or,  in any event, minimize – collateral damage.

[Commentary]

This Rule refers to “feasible precautions”, with a view to avoiding — or, in any event, minimizing — collateral damage to civilians or civilian objects where that is possible. For details, see Section G.
Categories: D: Specifics of Air or Missile Operations