siren code

air raid siren / alarm

siren

wind-driven siren

authentication code

code number

code word

color-code band

fire code

geolocation code

honor code

map reference code

Morse code

Morse code character

pulse code

Uniform Code of Military Justice (UCMJ)

United States Code (USC)

US Code

brevity code

code description

confidential code message (CCM)

fault code description

code names dictionary

attack code

bombardment code

clock code

code named

code words

wing code

runway reference code

aerodrome reference code

reference code

synoptic code