Watch Invasion Quartet for Free: How to Stream the Movie Online at 123Movies. . This British men-on-a-mission spoof set during World War II finds intrepid officer Bill Travers leading three colorful compatriots into Nazi-occupied France to destroy an obnoxiously large, loud, and destructive enemy gun. See if this fearless foursome can stomp their Fascist foes and get back to their game of cricket! Spike Milligan, Gregoire Aslan, and Thorley Walters co-star.