Plot
The Nazis imprison an Italian general who was planning to switch sides and turn over his army to the Allied side. Allied headquarters sends a small, somewhat misfit group of soldiers to spring the general from prison and carry out his plans.
Where to watch The Secret Invasion?
The Secret Invasion is an action movie featuring Stewart Granger.
The Secret Invasion is currently streaming for free (ad-supported) on Tubi TV.
It is also possible to buy The Secret Invasion on Amazon Video, Apple TV, Google Play Movies and YouTube.