Here we have, yes, another Italian war movie from the early 1970s. This one features a half-decent international cast and a slew of decent action sequences.
As the British evacuate Dunkirk, several German saboteurs infiltrate their forces. They kill a squad of English troops and take their ID tags. Frederick Stafford, the platoon leader, finds the dead men and realizes their IDs are missing. Upon returning to England, he heads efforts to locate the saboteurs before they can blow up radar installations along the coast.
The film boasts a good international cast: Frederick Stafford, though dubbed, is pretty good as the Hungarian-English Captain. Van Johnson does a corny bit as an English Air Marshall and even participates in a few aerial battles. Francisco Rabal is very good as the German officer who befriends Stafford; Stafford realizes who he REALLY is and must face him during the bone-shattering climax. Hottie Ida Galli turns in a good performance as Stafford's girlfriend. I must also note the presence of Luigi Pistilli as the German group leader. The man was marvelous in the Leone westerns and is very good here as well.
The battle sequences range from superb to incredibly corny. The dogfights involve live action, miniatures, and poorly edited black and white stock footage. The ground combat scenes are often confusing -- but exciting -- since the British and German infiltrators wear the same uniforms. Great cinematography -- this appears to be filmed on location in England is is done well. The music score is typical adventure type stuff but does the job. Much of the combat footage found itself recycled in Umberto Lenzi's FROM HELL TO VICTORY in 1979.
Overall, for a good cast and great direction by Enzo Castellari, I give it a 7/10.