"Rockets or Romance" (1971)

[Dave Monroe]

http://www.imdb.com/title/tt0602385/

See esp., 22:20 - 23:40

https://www.youtube.com/watch?v=wl2dQiB_0dA

"Hogan learns that the Luftwaffe have three mobile rocket launchers
moving into position to blitz London. Two of them are near a
resistance outpost, and Hogan’s been ordered to rendezvous with an
operative there, to uncover and transmit the exact location to the
Allies, who’ll then blow up those two weapons. The third launcher is
located inside Stalag 13, which concerns Klink, who doesn’t believe he
can spare the men to guard it. So his superior, General Burkhalter
(Leon Askin), commands him to move some prisoners to kitchen duty to
fill in the gaps.

[...]

"When Hogan’s contact deduces that the rocket launcher at Stalag 13
could have its gyroscopes (and thus its navigation system) disrupted
by an electro-magnet, the heroes take advantage their new kitchen
assignment—the one Klink was nervous about—to distract Schultz while
they get a closer look at the weapon."

http://www.avclub.com/article/ihogans-heroesi-unceremonious-finale-comes-from-th-96053
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Pynchon-l / http://www.waste.org/mail/?list=pynchon-l