досвід підпільної роботи (про розвідку / термін спецслужб)
work hygiene / hygiene of work
military experience
traumatic experience
yeoman (your experience, organization, management, administration needed)
analysis and experience
with years of intelligence experience
deep intelligence experience
experience in human intelligence
fieldwork experience
have zero intelligence-related experience
intelligence-related experience
pilot experience level
combat experience
sum up experience
casualty experience
experience casualties
clandestine
clandestine operation; covert operation
clandestine border crossing
clandestine operation
clandestine organization
keeper of a clandestine address
give clandestine assistance
clandestine agencies
clandestine agent
clandestine assembly area
clandestine force
clandestine operations
clandestine passive resistance
clandestine patrol base
clandestine reconnaissance
clandestine warfare