21 cm Mörser 10

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21 cm Mörser 10
21 cm Mörser 10 near Victoria Barracks, Melbourne, Australia.
Place of originGerman Empire
Service history
Used byGerman Empire
WarsWorld War I
Production history
Weight15,496 lb (7,029 kg)
Barrel length2.57 m (8 ft 5 in) L/12

Shell252 pounds (114 kg)
Caliber211 mm (8.3 in)
Breechhorizontal sliding-wedge
Carriagebox trail
Elevation-6° to +70°
Muzzle velocity335 m/s (1,101 ft/s)
Maximum firing range9,400 m (10,300 yd)

The 21 cm Mörser 10 (21 cm Mrs 10) was a heavy howitzer used by Germany in World War I (although classified as a mortar (Mörser) by the German military). It replaced the obsolete 21 cm Mörser 99, which lacked a recoil system. For transport, it broke down into two loads. Some howitzers were fitted with a Gun shield during the war. As it was also intended for siege use, a concrete-penetrating shell was also used. Unusually, it had two spades: a folding one halfway down the trail and a fixed one at the end of the trail.

Before the 21 cm Mörser 10 was commissioned for mass production, a small test series of 21 cm Versuchmörser 06 ("test mortar") was given to the German army. Eight pieces equipped two batteries, but their range of only 7 km was found insufficient, so the range was increased for the production version. Serial number 3 of these rare pieces is now exposed at Red Cliffs, Victoria.[1]

216 were in service at the beginning of the war.[2] It was replaced by the 21 cm Mörser 16, which was also known as the langer 21 cm Mörser since it was merely a lighter 21 cm Mrs 10 with a longer barrel for extra range and other refinements.

The specifications provided for this weapon by difference sources are contradictory and, thus, those given here cannot be regarded as authoritative.


See also[edit]

Weapons of comparable role, performance and era[edit]


  • Hogg, Ian. Twentieth-Century Artillery. New York: Barnes & Noble Books, 2000 ISBN 0-7607-1994-2
  • Jäger, Herbert. German Artillery of World War One. Ramsbury, Marlborough, Wiltshire: Crowood Press, 2001 ISBN 1-86126-403-8


  1. ^ http://canonspgmww1guns.canalblog.com/archives/2011/01/13/20119317.html
  2. ^ Jäger, p. 29
  3. ^ Emery, Max (27 November 2014). "History behind Childers' cannon". Bundaberg News-Mail. Archived from the original on 23 March 2015. Retrieved 29 May 2018.
  4. ^ "Claim 210 mm Howitzer Morser M10 c 1916 – Isis District War Memorial & Shire Council Chambers c 1926, Childers, QLD". Retrieved 29 May 2018.
  5. ^ "Surviving Gun File (# 30)". Database of the WW1 surviving artillery. Archived from the original on 29 May 2018. Retrieved 29 May 2018.

Further reading[edit]

External links[edit]