In order to steal key documents, Hogan and his men volunteer for a German suicide-squad train bound for the Russian front.

Things heat up as Hogan schemes to return a load of stolen paintings to London, just as Marya convinces Schultz to impersonate Reich Marshal Goering.

When a rocket lands near camp, the heroes don't know how they'll smuggle it out --- until Russian spy Marya comes on the scene.

General Burkhalter's sister Gertrude thinks her dim-witted fiance should be made Klink's assistant, which interferes with Hogan's plan to aid an American general.