Yes, there were godless Communists in the United States Army. However, they did not worm their way into our beloved armed forces using guile and deception. They were invited.
During the Cold War, the United States attempted to woo Yugoslavia into the NATO/Western powers camp through economic and even military assistance. One form of military assistance offered was the training JNA officers in US military schools such as Command and General Staff College at Fort Leavenworth, Kansas. Among the attendees was Veljko Kadijević who completed the school in 1963 and Lt. Col. Pasmiz Ramusovic(SP?*) who attended in 1965. Below is his Invitational Orders from the US Army detailing to Ramusovic the conditions of his involvement, what he needed, and was expected of him.
(*)As you will see, the documents were a blurry mess.