Hundred-mile-an-hour tape in the Army is really a 100-foot measuring tape. If the Army improperly used much duct tape (as so many civilians do now), the Army would go broke pretty fast. ;-)
We used it to hold the turrets on the tanks. If you rotated the turret three complete turns to the left, it would fall off. We had those old diesel tanks. You could never get them to do a hundred miles per hour to check the tape. It would hold on at 92 miles an hour, though.