The Mexico City National Cemetery is a cemetery in Mexico City. It was established in 1851 by the United States Congress to gather the American dead of the Mexican–American War who lay in the nearby fields and to provide burial space for Americans who died in the vicinity.
It is first dedicated United States military cemetery abroad and served as a model for later cemeteries.
Wikipedia https://en.wikipedia.org/wiki/Mexico_City_National_Cemetery
More information on abmc.gov http://www.abmc.gov/cemeteries/cemeteries/mx.php
Address 31 Virginia Fabregas, Mexico City, Mexico
Coordinates 19°26'34.372" N -99°9'56.48" E