olemus
Wiktionary:
1. (military, euphemistic) damage to civilian property or civilian casualties that are the unintended result of military operations
3. unintended victims of an attack targeted at someone or something else

näiteid
https://edition.cnn.com/2015/10/06/middleeast/us-collateral-damage-history/index.html

ülevaateid
https://research.cornell.edu/news-features/collateral-damage-warfare-challenge

https://www.justsecurity.org/74619/avoiding-collateral-damage-on-the-battlefield/

https://scholarship.richmond.edu/cgi/viewcontent.cgi?article=1056&context=philosophy-faculty-publications