This is the 515th most frequent Russian word.
военный
Military.
Here, "военный" is used as a noun and means "military officer" or "serviceman".
Военный помог пострадавшим в аварии.
The military officer helped the victims of the accident.
Here, "военный" is also an adjective, modifying "разведке" and implying its military nature.
Он долгое время служил в военной разведке.
He served in military intelligence for a long time.
In this sentence, "военный" acts as an adjective, describing the noun "парад" and meaning "military".