Click here to access article by Tony Cartalucci from New Eastern Outlook.
I don't think he directly explains "how to hide a Nazi army". However, he uses reports in European media to discredit US's massive propaganda about the virtues of their puppet government in Kiev and their tirade against Russian reactions. Cartalucci supplies us with a variety of such reports which describe the Empire's puppets and their supporters as consisting of substantial elements of neo-Nazis, racists, and homophobes.
So, who among the US Empire directorate really cares as long as these elements serve their mission of world domination? And, who cares as long as the American people can be constantly fed outrageous lies that are mostly believed? A direct answer to the headline would be a massive propaganda campaign. However, it seems that they lack the same overwhelming control of European media as they have at their command in the US.