The best context to look at "The Petrified Forest" is through the context of the first great disaster of the 20th Century: World War I (or, as it was known then, "The Great War"). I had just finished reading a long, thorough history of World War I when I saw this one and even though this is some twenty years after that awful catastrophe (all wars usually are, but this one especially), one can still feel it's aftershocks rolling through that desolate landscape. Maybe that's why Leslie Howard's character, Alan Squier, wound up wandering through there, as it probably reminded him of more than a few days and nights in No Man's Land (a term invented by the Great War to describe the space between enemy lines). A lot of non-American WWI veterans came out of it really messed up. The whole foundation of the 19th century's ideals had been laid to waste by this new and brutal world that WWI brought about. So it's not very suprising to me that Squier feels "obsolete", as he puts it; the role he had hoped to take with his world doesn't even exist. The best he can do is give Gabrielle Maple the chance he can never have.
Duke Mantee (played by Bogie in a superb, breakthrough performance) is also a relic, but from a different period, that of the Roaring Twenties. Not for nothing were such outlaws as John Dillenger and Bonnie Parker and Clyde Barrow glamourized during this period; one could possibly point to our current fascination with serial killers as this phenomenon's modern equivalent. But by 1936, the period of the romantic outlaw was drawing to a close if it wasn't already over (a point made five years later in "High Sierra"). Mantee is totally without hope of escape or even a reprieve. He sees his fate as clear as day and doesn't kid himself about his chances of eluding it forever. That, more than anything, would explain his rapproachment with Squier and perhaps his reluctance to shoot him until Squier gives him no choice. Mantee may know his own fate well enough, but he has no wish to inflict that fate on someone in the same position.
Granted, there's a lot more layers and angles going on in "The Petrified Forest" than what I've just mentioned here, but this was the one that grabbed the most. Because human nature doesn't change that much, perhaps that's why this brilliant stage piece still holds my respect.
