jpdb beta

patrolling (esp. using ships or aircraft)

sentry; sentinel

(preliminary) skirmish; prelude; preliminary encounter; warm-up match (e.g. before a final)

outpost

sentry

patrol plane

observation post

patrol boat

antisubmarine patrol plane

scouting line

sentry post; guard post

sentry box

outpost

military patrol boat

general outpost

combat outpost

general outpost line

outpost cavalry

outpost duty

maritime patrol aircraft; MPA