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Yellow Jack (1938)

Passed  -  Drama | History | Mystery  -  27 May 1938 (USA)
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Ratings: 6.4/10 from 137 users  
Reviews: 6 user | 2 critic

In the fever-stricken areas of Cuba a brave band of scientists, doctors and U. S. Marines fight a losing battle against the deadly plague of 'Yello Jack,' until the great heroic risk taken by an Irish sergeant brings victory.



(screen play), (from the play by), 3 more credits »
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Title: Yellow Jack (1938)

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Complete credited cast:
John O'Hara
Frances Blake
Lewis Stone ...
Major Reed
Charlie Spill
Dr. Jesse Lazear
Dr. Finlay
Henry O'Neill ...
Janet Beecher ...
Miss Macdade
William Henry ...
Alan Curtis ...
Sam Levene ...
Stanley Ridges ...
Dr. James Carroll
Phillip Terry ...
Jonathan Hale ...
Major General Leonard Wood


In 1898 Cuba, U.S. troops who have survived the Spanish-American War are now dying by the hundreds from disease -- yellow fever, known as "yellow jack." Major Walter Reed, an Army physician, struggles to find the cause of the infection and to overcome governmental interference. When an answer seems at last possible, Reed decides that the only way to test the theory is to expose his own men to the disease. He cannot order men to undergo the test. Yet finding volunteers seems impossible. Without them, though, yellow jack will perhaps kill millions. Written by Jim Beaver <>

Plot Summary | Add Synopsis

Plot Keywords:

disease | cuba | victory | theory | sergeant | See more »


Passed | See all certifications »




Release Date:

27 May 1938 (USA)  »

Also Known As:

Cinco Heróis  »

Company Credits

Production Co:

Show detailed on  »

Technical Specs


Sound Mix:

(Western Electric Sound System)

Aspect Ratio:

1.37 : 1
See  »

Did You Know?


In the actual event, the primary volunteers were Clara Maas, a nurse, and Dr Jesse William Lazear. It is unclear if any soldiers volunteered. Maas contracted the disease but recovered. Later, she allowed herself to be bitten a second time to determine if having the disease provided immunity. She again contracted the disease. She died from this infection. Lazear was the doctor who determined that the disease was mosquito-borne. Without telling others, he allowed himself to be bitten by an infected mosquito. He died from the illness. See more »


While Breen and the other men are digging and talking about mosquitoes, his hair changes from being combed and uncombed between shots. See more »

Crazy Credits

Yellow Jack celebrates what these men did, rather than what they were. That their heroism however, should not go unrecorded, their true names are here given. (Followed by the names of the 5 volunteers for the yellow fever experiment.) See more »


Version of Celanese Theatre: Yellow Jack (1952) See more »


Battle Hymn of the Republic
(1861) (uncredited)
Music by William Steffe (circa 1856)
Lyrics by Julia Ward Howe (1861)
Played during the foreword and often as background music
See more »

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User Reviews

Mosquitos and mascara, and a phony John O'Hara
25 March 2005 | by (Minffordd, North Wales) – See all my reviews

'Yellow Jack' is a goodish, proficiently made Hollywood drama which is weakened by several poor artistic decisions, and rendered absolutely ludicrous by one especially bad decision (which I'll describe presently). The film deals with an inspiring true story in medical history, namely the attempts of the U.S. Army Medical Corps to find a cure for malaria, also known as yellow fever and 'yellow jack'. This disease, spread by mosquitos, was so virulent in tropical regions that it seriously hampered the efforts to build the Panama Canal, as well as similar endeavours in Cuba and elsewhere. I'm only slightly familiar with the facts of this story, so I can't say how accurate this movie is. However, some of the actors in this cast are playing actual historic figures ... notably the underrated Jonathan Hale as Major-General Leonard Wood, the officer in charge of the U.S. Army Yellow Fever Commission. Also excellent here is MGM stalwart Lewis Stone as Major Walter Reed, and Frank Puglia (whom I usually dislike) as Aristides Agramonte. Less impressive is Henry Hull, trying hard to be a serious "ack-torr" instead of portraying a believable character. Hull is cast as Jesse William Lazear, a physician who -- in real life -- deliberately infected himself by allowing 'loaded' mosquitos to transmit the malaria virus to him. Hull's performance makes Lazear look ridiculous rather than heroic.

The film takes place in Cuba in 1900, hard upon the Spanish-American War. Dr Wood and his staff have found a potential treatment for malaria, but must test it on human subjects. Although one might expect Dr Wood to be the central character in this medical drama, the screenplay oddly emphasises one of his test subjects. (This is one of the bad decisions which I've mentioned, but not the worst of them.) Five medical volunteers are found; the de-facto leader of these is played by Robert Montgomery, as an Irish-American trooper named John O'Hara. Is Montgomery playing an actual historic personage? If not, it seems a strange decision for his character to be named John O'Hara, as this is the name of a best-selling novelist who was already well-known in 1938.

There are the usual Hollywood monkeyshines with history, notably in the casting of Virginia Bruce as an army nurse. An extremely beautiful blonde with great sex appeal but very little acting ability, Virginia Bruce is usually someone I'm delighted to see on the screen. Here, however, I find her beauty distracting. I can't believe that any woman as glammed-up as this would have been working as an army nurse in 1900. During Louis B Mayer's reign as head of MGM, the studio had a firm policy that no leading lady would be depicted in an unglamorous manner. So, we get nonsense like this with army nurses getting the glamour treatment. No matter how steamy the swamps of Cuba might get, Virginia Bruce's mascara never wilts. She has a couple of very beautiful close-ups here ... but that beauty works against the plausibility of this story.

One of Montgomery's fellow guinea pigs, played by Buddy Ebsen, is a feller named Jelly Beans. I found this nickname hugely implausible. Did jelly beans even exist in 1900? Even if they did, 'Yellow Jack' takes place largely in a military compound under military discipline: surely Ebsen's character would be referred to by his name or his rank, not some twee nickname. Ebsen was a talented character actor, but here he's been given a badly-written aw-shucks role, and he just can't make the character credible.

The supremely bad decision was made by whoever decided that Montgomery should play his role with an Irish accent. Did I say Irish? I meant 'Oirish'. Montgomery's begorrah brogue is so full of Killarney blarney that it damages any plausibility in his characterisation, as well as the performances of other cast members in his scenes. Here we have a true story that ought to be dramatic and gripping on its own merits, yet Montgomery and Ebsen -- and, to a lesser extent, Henry Hull and Andy Devine -- are walking about with big red neon signs over their heads, flashing the words 'FICTIONAL CHARACTER'.

On the positive side, 'Yellow Jack' features some extremely impressive montages by the brilliant Slavko Vorkapich. They belong in a better film. I'll rate this movie just 4 out of 10.

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