The Rocket
Launcher T34 (Calliope) was a tank-mounted multiple rocket launcher used by
the United States Army during World War II. The launcher was placed atop the
Medium Tank M4, and fired a barrage of 4.5 in (114 mm) rockets from 60 launch
tubes. It was developed in 1943; small numbers were produced and were used by
various US armor units in 1944-45. It adopts its name from the musical
instrument "Calliope", also known as the steam organ, which had similar lined
pipes.
