Collocations for officer - noun

air-force, army, military, naval
commanding, high-ranking, ranking, senior, superior
The decision rests with the ranking officer (= the most senior officer present).

junior, petty
a former navy chief petty officer

commissioned, non-commissioned
warrant
staff
recruiting
duty
He telephoned the duty officer at regimental headquarters.

intelligence
He's a retired Army intelligence officer.

uniformed
retired

salute
to salute a superior officer

command sth
the officer commanding the infantry

serve
a former army officer who served in Bosnia

corps
cadet (esp. BrE), candidate (AmE)
training

chief, principal, senior
full-time, part-time
presiding, responsible, supervising (esp. BrE)
Report the incident to the responsible officer.
the officer responsible for implementing the plan

regional
administrative, customs, environmental health (BrE), financial, liaison, medical, press, probation, security, trading standards (BrE), training, welfare (esp. BrE)
an education welfare officer (BrE)

chief executive (abbreviated to CEO), chief financial (abbreviated to CFO), chief information, chief investment, chief marketing, chief operating, chief technology, etc. (all business)

be, work as
become
appoint (sb)
Khan has been appointed chief executive officer.

have
The charity has a full-time press officer working with the national newspapers.

chief, senior, superior
junior
law enforcement, police
arresting, investigating
duty
We spoke to the duty officer at the police station.

uniformed
plain-clothes
undercover

investigate sth
officers investigating the murder

patrol sth
raid sth, swoop on sth (BrE,informal)
Officers raided an address in the Pittsburgh area.
100 officers swooped on various south Essex locations.

seize sth
arrest sb