Alarm post

a place to which troops are to repair in case of an alarm.

See also: Alarm

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Again, you may have had a platoon told off to escort the ammunition column, or the supply column, and you will have baggage guards with the battalion transport, and you should have thrown out at once on arrival in camp and before any work is begun, a couple of sections from the platoons destined for the front line to act as covering party till the defence preparations on the perimeter are complete and the alarm posts occupied.
As soon as covering parties are out and alarm posts occupied and tested, ranges taken and so on, start gathering rocks, or if there is only shale to build with, filling sandbags with it or at least collecting it into heaps.