Hogan must get a U.S. general out of camp, Klink's plans to move the fence line, and Gertrude's arrival with her fiancé (that she would make Stalag 13's adjutant.)''
The guys find a new rocket that has landed near camp. They are at a loss on how to get it back to England for study when Marya and her rocket-designing husband enter camp.
Klink is appointed defense counsel for a German officer on trial for treason who has secret plans intended for London. Hogan helps Klink prove the officer's innocence in order to secure the plans.
Hogan arranges for a beautiful Russian spy to convince Klink that the Kommandant should volunteer for service at the Russian front. Hogan's payoff: some secret papers.
In an effort to transport a German anti-radar unit to London, Hogan passes LeBeau off as a fortune teller after convincing Klink he was struck by lightning.
Hogan plans to get a trainload of stolen paintings back to London, but things get complicated when Marya uses Schultz to impersonate Reich Marshall Goehring. ''
Hogan gets Klink to open an antique business by selling "rare" cuckoo clocks Klink buys in town, so the POWs can smuggle information out in the timepieces. ''
Hogan gets the Germans to look for an allied agent by planting an opened parachute in camp. This will give him an opportunity to get at the briefcase that was handcuffed to a courier. '
Hogan faces a startling development: his captors are sending him to America to demand surrender -- with a super weapon supposedly supplied by the Russians.
Hogan uses the car of an SS man who's just married Klink's old girlfriend and is honeymooning in Paris, where Hogan needs to pass radios to the underground. '
Hogan and the daughter of a German general try to photograph her father's plans designed to prolong the war. Things get complicated when Hogan, posing as Klink's aide, has to avoid Klink as he tries to photograph the plans.
Hogan is ordered to capture LeBeau, but not before he lets him complete his mission to sabotage a secret German plant where a new mine is being developed.
To convince Klink to bring an electronics expert, who wants to defect, to Stalag 13, Hogan leads Klink to believe that a rabbit trap is really a secret electronic device.
When a POW is caught at the processing location after Stalag 13, Hogan suspects there is a traitor in the Underground. Newkirk and LeBeau join him to find out who it is.
After Hogan mines a bridge, he learns that a truck of Allied prisoners would be the first to cross it and a new plan is born which includes a flaming arrow from Sioux Indian Carter, aka Little Deer Who Goes Swift And Sure Through Forest.
Hogan plays a waiting game with a German general. The scheming general has planted a rocket-fuel depot right outside Stalag 13 in hopes of trapping the area's resident saboteur, whom he suspects is Hogan.
In Paris, Hogan uses an entertainer's friendship with a general and someone who went to high school with Kinchloe as part of a plan to get plans for the defense of Paris.