- Beware - Beware of observatory! - Beware! There’s a picket - Matter of concern - Observation point - Observation post - Pay attention! There’s a guard!
- Distant base - Mail being sent off from remote military base - Military base a distance from the main body of troops - Remote station - A post or station without the limits of a camp, or at a
distance from the main body of an army, for observation of the enemy. - The troops placed at such a station.