President Trump has picked Lieutenant General H.R. McMaster as his national security adviser, to replace the scandal-stained Michael Flynn. In any administration, McMaster would be an excellent pick for this role. But when it comes to the Trump administration, his appointment seems particularly apt. Let's go over his credentials. The portmanteau most often associated with McMaster is "warrior-scholar" and, indeed, he is one of those few generals who has made his mark both as a warrior and a scholar. Early in his career, McMaster was a tank captain who helped win the famous (among war buffs) Battle of 73 Easting during the first Gulf War, facing a larger Iraqi force.