The message brought back from the guardroom was that no carriage had entered or left.
"The Secrets of Potsdam"
William Le Queux
We passed through the doorway at the end of the salon-and there was my guardroom!
"The Orchard of Tears"
Sax Rohmer
After a march of three miles or so, we came to a big factory which was used as barracks, and I was put into the guardroom.
"The Escaping Club"
A. J. Evans