English

Prepositional phrase

in the line of duty

1. (idiomatic) as part of one's duties, usually of the military or police personnel, or of government officials

   An ambassador died in the line of duty when his car was ambushed.

2. Used other than as an idiom: see in,‎ the,‎ line,‎ of,‎ duty.

Usage notes

Term is primarily used in relation to the job-related dangers or death.