Not just for U.S.A. Civil War conflict sites, but also in the people of the Amazon to annotate the online maps with "les lieux de memoires" (memory places that Pierre Nora first described in 1993):
minute 23:20 at http://www.youtube.com/watch?v=HMBJ2Hu0NLw
minute 23:20 at http://www.youtube.com/watch?v=HMBJ2Hu0NLw