The ground appointed to each Regiment, by the Quarter-Master-General for them to march to in case of an Alarm from the enemy. Bailey, 1721.
1794. Nelson, in Nicolass Disp. (1845), I. 386. Our troops in ten minutes at farthest would be at the bridge from the alarm-posts.
1844. Regul. & Ord. Army, 180. Although a Regiment or a Division may remain for a single night only in a quarter, yet an Alarm-Post is invariably to be established.