Strongpoint

In military tactics, a strongpoint is a key point in a defensive fighting position which anchors the overall defense line. This may include redoubts, bunkers, pillboxes, trenches or fortresses, alone or in combination; the primary requirement is that it should not be easily overrun or avoided.[1] A blocking position in good defensive terrain commanding the lines of communication, such as high ground, is preferred. Examples from history include Thermopylae, where the ancient Greeks held back a much larger Persian army, and Monte Cassino, which anchored the Winter Line in Italy in World War II.

A German concrete pillbox or blockhouse after capture by the Coldstream Guards on the outskirts of Houlthulst Forest, Battle of Poelcappelle, 10 October 1917

References

1. Brett A. Stoneberger (2004), Combat Leader's Field Guide, Stackpole Books, p. 21, ISBN 9780811731959