It has the military stamp on it (6,6)
I believe the answer is:
parade ground
'it has the military stamp on it' is the definition.
The definition suggests a singular noun which matches the answer.
This is the entire clue.
Can you help me to learn more?
(Other definitions for parade ground that I've seen before include "Military area" , "where there may be a muster" , "square" , "Where troops muster" , "Place for drill" .)