Inside was a document that would later be described by a Pentagon archivist as “the most psychologically unsettling field manual ever written.” Officially designated Classified Field Memorandum 1147-R: The Reverse Art of Tank Warfare , it contained no diagrams of angled armor, no ballistic calculations, no crew drills for loading high-explosive shells. Instead, it was a 47-page meditation on retreat, deception, and the tactical utility of moving backward while facing forward.
Why was such a potentially valuable doctrine classified and then buried?
There are three theories.
One anecdote, declassified in the 1990s, tells of a young lieutenant who trained under Reynard. During a live-fire exercise, his Sherman reversed into a ditch. The crew panicked. The lieutenant keyed his mic and said, calmly, “We have now achieved hull-down reverse defilade. Resume firing.” They survived the exercise. He later commanded a tank destroyer battalion in the Bulge. The memorandum was never widely distributed. After the war, most copies were recalled and destroyed. Official histories of armored warfare mention reverse movement only in footnotes, usually as a footnote to a footnote about the retreat at Kasserine Pass.
A young U.S. Army major named Harold C. Reynard, a former art historian turned armored warfare analyst, noticed something strange in after-action reports. In the few engagements where outmatched American tanks survived against heavier German armor, they had often done something the manuals explicitly forbade: they had retreated in a controlled, aggressive manner —firing while reversing, using reverse gear not as panic but as a primary tactical posture. classified the reverse art of tank warfare
By the 1950s, tanks were faster, stabilizers were better, and the need for reverse-gear tactics seemed obsolete. (It would return, brutally, in the urban battles of Grozny and Fallujah, where reversing out of an ambush became survival.)
To master reverse art, a tank commander had to unlearn ten thousand hours of instinct. Inside was a document that would later be
It was, in essence, the art of losing ground without losing a war. By mid-1943, Allied tank crews were dying in predictable patterns. The Sherman tank, for all its reliability and numbers, was outmatched at range by the German Panther and Tiger. Standard doctrine emphasized aggression: close the distance, use mobility, flank. But in the hedgerows of Normandy and the dusty plains of North Africa, too many Shermans were burning before they could get within 800 meters.