T34 Calliope

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 M4 Sherman, with its prominent vertical side frames anchored to the turret's sides, and fired a barrage of 4.5 in (114 mm) M8 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 parallel or clustered pipes, and which had historically existed on steamboats of the Mississippi River in the United States, or as is more commonly known and associated with traditional "circus music".

Sherman Calliope
T34 Calliope in France
TypeTank-mounted rocket launcher (Rocket-Artillery Tank)
Place of originUnited States
Service history
WarsWorld War II
Production history
DesignerVictor Hawkins

60 × 4.5 in (114 mm) rockets (T34),

64 × 4.5 in (114 mm) rockets (T34E1),

60 × 7.2 in (183 mm) rockets (T34E2)


  • Rocket Launcher T34 (Calliope) – Version carrying 60 4.5 in (114 mm) rockets in arrangement of a group of 36 tubes on the top, and a pair jettisonable groups of 12 tubes (24 tubes of jettisonable groups) on the bottom (Not jettisonable from M4A1 Sherman variant).

4.5 inch (114 mm) fin-stabilized projectile armed with High-Explosive, which had a maximum range of 4200 yards (4 km)

The range was increased to 5250 yards (5 km).
  • Rocket Launcher T34E1 (Calliope) – Same as T34 but groups of 12 jettisonable tubes replaced by groups of 14 tubes.
  • Rocket Launcher T34E2 (Calliope) – Caliber of rockets increased from 4.5 in (114 mm) to 7.2 in (183 mm), number of tubes remains at 60. Saw combat in 1944–1945.

See also


  • Hunting, David. The New Weapons of the World Encyclopedia. New York City: Diagram Visual Information Ltd., 2007. ISBN 0-312-36832-1
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