In military parlance, the term retrograde can mean several things, among them withdrawal from a war zone, “where all or part of a deployed force voluntarily disengages from the enemy.” The U.S.
exit from the Vietnam War constituted a retrograde action, a chaotic process documented in Rory Kennedy’s Oscar-nominated film Last Days of Vietnam.
A much more recent example came last year in Afghanistan, when U.S. forces were pulled from the battlefield after nearly 20 years of combat.
The final months of America’s military intervention there—and what happened after the withdrawal—are documented in Retrograde, the new film from Matthew Heineman.
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