A point d'appui (French for fulcrum), in military theory, is a location where troops are assembled prior to a battle. Often a monument is erected to commemorate the point d'appui for notable battles. In some battles there may be more than a single point d'appui.F. C. Heath, 1911
Examples An example is the Catto Long Barrow in eastern Aberdeenshire, Scotland, which is located at the point d'appui of a historic battle between Vikings and Picts.C. M. Hogan, 2008
See also Maneuver Schwerpunkt, a term with a similar literal meaning though not a similar military meaning Staging area
References Notes
Bibliography F. C. Heath (1911) The Royal Engineers Journal, vol. XIV, Royal Engineers Institute, W. & J. Mackay & Co., Ltd C. Michael Hogan (2008)"Catto Long Barrow fieldnotes", Modern Antiquarian