On the earth island at the intersection of D953 and Chemin Bas de la Pile.  There is a small parking area as well.

A large bornes with "sacred soil" from the Verdun World War 1 battlefield in France; these bornes are known as Borne de Terre sacrée (Borne of Sacred Soil).

This particular borne was dedicated to Marine General Robert H. Dunlap who died while trying to resuce a local French woman in 1931.  General Dunlap was a Veteran of numerous US wars as well as WW1 in France.

The Borne de terre sacrée was the idea of the Franch WW1 Veteran and Sculptor Gaston DeBlaize derived from the Voie Sacree - The Sacred Way Milestones. In 1927, Gaston Deblaize (1895 - 1935), came up with the idea of making commemorative terracotta milestones and selling them as a means of raising funds and awareness of the plight of former soldiers who were living in the retirement home for "Gueles Casses" (in English 'broken faces') - in other words, those with sever facial injuries - at Moyssy-le-Vieux in France.  

Six bornes were placed; five in France and one in Arlington National Cemetery in the US which was removed in 1938 due to a flaw in the construction. The completed milestones in Deblaize's project were dedicated in the form of a gravestone and with soil from Verdun, at Invalides in Paris - dedicated 12th December 1929, Guernic, Quiberon - 23rd August 1931, Cinq Mars la Pile - 18th October 1931, Meures - 31st July 1932 and Vignola, Ajaccio on 30th September 1932. 

This borne was restored in 2024.

One of the other 5 in France is dedicated to the mothers of the American dead of WW1.  See site Portivy, Borne de Terre sacrée (Borne of Sacred Soil) dedicated to American WW1 Gold Star Mothers.

Source: https://fascinatingfactsofww1.blogspot.com/2015/01/la-voie-sacree-sacred-way-road-from-bar.html

https://www.abmc.gov

General Dunlap