One could argue that there is sufficient proof now that US application of military in attempting to "democratize" nations has so far failed, but that should not come as a surprise since military is, by definition, not "democratic". Democracies deploy military exclusively to preserve peace (by discouraging invasion, for instance). This is still not a slight against US military, but against US foreign policy instead. Whether that makes it a net win in other (economic, geopolitical) measures for USA is another matter altogether.
As such, I do not think you should discount US military as a top-notch organization with a lot of know-how in building up expertise.
Not paying attention to research with military provenance seems rather silly. What matters more are the questions: does this work? Where has it been tried? And can I apply it to my company or career?