черговий радник
field officer (field-grade officer / senior officer)
duty, off duty
duty, on duty
military adviser
public information adviser
security adviser
adviser on tank matters
adviser on amphibious operations
adviser on atomic weapons
adviser
sector adviser
air adviser
catering adviser
airlift duty officer
duty officer
fighter duty officer
reconnaissance duty officer
active-duty Naval flag officer
duty petty officer
operations duty officer
active service/ duty
combat alert duty
combat duty assignment
command billet / duty / installation
command duty
demolition duty
duty roster
entry on active duty
foreign duty
full time military duty
guard duty
inactive duty training (IDT)