секретний агент; підпільник
agent / agent network / agents
CW agent (chemical warfare agent)
obscurant agent (vision-restricting agent)
damage agent / damaging agent
clandestine
clandestine operation; covert operation
clandestine border crossing
clandestine operation
clandestine organization
experience with clandestine work
keeper of a clandestine address
give clandestine assistance
clandestine agencies
clandestine assembly area
clandestine force
clandestine operations
clandestine passive resistance
clandestine patrol base
clandestine reconnaissance
clandestine warfare
Defense Clandestine Service (DCS)
agent vapor
anti-plant agent
automatic chemical agent alarm
biological agent
blister agent/ gas
blood agent
chemical agent detector
chemical agent detector kit
chemical agent detector paper
chemical agent dissemination
choking agent / gas