Joint Attack Helicopter Instrumented Evaluation

The Joint Attack Helicopter Instrumented Evaluation was a series of military exercises that tested the use of attack helicopters against simulated Warsaw Pact formations. They were carried out near Ansbach, Germany, between March and May 1972, primarily by units of the US 7th Army and the German Army, with active participation from the Canadian Army.

Source: Wikipedia — Joint Attack Helicopter Instrumented Evaluation (CC BY-SA 4.0)