The U.S. Army Once Created a Whole Alternate History For Its War Games

Fake military blended World War II and early Cold War fears

The ground combat branch also clearly was worried about other enemies besides resurgent fascists. Still, early versions of the Trigonist back story didn’t mention the word “communist” at all.

But the Circle Trigon’s three-man triumvirate government could describe a Soviet-style “people’s committee” just as well as it did the Germany-Italy-Japan axis. The movement’s ideology also “freely used the terms ‘democracy,’ ‘the people’ and other similar terms”—something that was also true of Marxist-Leninist groups.

Later editions of the aggressor manuals eventually spelled out the connection, defining communists as Trigonist sympathizers and potential collaborators.

This communist connection—first implied and then explicit—neatly played into the public fear of Soviet expansion. From the very beginning, the Army’s alternate history included an invasion of the continental United States.

The fictional background information explained that the Trigonists and their allies were in complete control of New England and Florida by 1947. Secret agents also fomented a rebellion along the Kentucky-Tennessee border and tried to invade California.

Central Intelligence Agency photo

The main rationale for this fiction was to give the Army an excuse to train in these areas. But the Aggressor documentation also specifically named the real American Communist Party as a possible ally of the fake adversary.

In addition, the training exercises against this trumped-up enemy sometimes included civilian populations. In 1952 the military turned Lampasas County in Texas into a virtual battleground between a Trigonist invader and liberating Army units.

82nd Airborne Division soldiers role-played the enemy forces wearing special uniforms and insignias. Troops set up the kind of checkpointsthe world had seen in occupied Germany right after World War II—and which still existed in 1961, as seen in the picture above from the Berlin Crisis.

In spite of all of this, the documents insisted that the Circle Trigon represented no real countries or militaries. Both the 1951 Handbook on Aggressor Military Forces and the 1959 guide Aggressor, The Maneuver Enemy insisted that any resemblances to real nations, enemy forces or individuals were just coincidences.

In order to lend some weight to this assertion, the Army declared that the Trigonists spoke Esperanto, an invented language from the early 20th century.

The Army continued to train against the Circle Trigon until 1978. The ground combat branch replaced them with the “Krasnovians”—which it admitted to modeling on Soviet-style forces. Since then, American troops have squared off against a number of other fake militaries, as well.