Unintentional or incidental injury or damage to persons or objects that would not be lawful military targets in the circumstances ruling at the time. Such damage is not unlawful so long as it is not excessive in light of the overall military advantage anticipated from the attack. (JP 3-60)
COLLATERAL DAMAGE
Meaning of COLLATERAL DAMAGE in English
DOD English dictionary of military terms. Английский словарь военных терминов DOD. 2012