Pretty good article on tracking down old FFL sites in Morocco. Some photos, a little history, worth a read for history geeks.
http://www.pasthorizonspr.com/index.php/archives/07/2012/archaeology-of-the-french-foreign-legion
http://www.pasthorizonspr.com/index.php/archives/07/2012/archaeology-of-the-french-foreign-legion
Using a combination of numerous literary sources, diaries, French military mapping and satellite imagery a number of possible fort locations were investigated before a decision was taken regarding the most suitable for more detailed study.