Getting back to the main point:  The source cited in footnote 1 makes no reference to "guerra de intervencion norteamericana."  Also, the hyperlink next to that footnote connects to the "Guerra de Intervencion Norteamericana" article in the Spanish-language Wikipedia.  Under the "Titulo" headline of the "Discusion" section of that article, it is argued (with supporting evidence) that the "guerra de" prefix has no standing in Mexican historiography.  Absent better evidence, it would seem the "guerra de" in the Spanish-language Wikipedia is a mistake and to use it in the English-language Wikipedia would repeat that mistake.