Factual error: Season 3, "To Seek and Destroy": Though the dialog throughout makes reference to the launch of a V-1 rocket, the stock footage shown is of a V-2. (00:05:00)
Factual error: Season 3, "To Seek and Destroy": It's supposedly 1944, but the German agents are pursuing the Americans in a Renault Dauphin manufactured in the 1960s. (00:41:30)
Factual error: In the initial opening credits, there's a statement that the flying battle scenes were flown by the Air Force. At the time of the events depicted there was only the Army Air Corps. 1947 was the beginning of the Air Force.
