The 203 mm howitzer M115, also known as the 8-inch howitzer M115, and originally the 8-inch howitzer M1 was a towed heavy howitzer developed by the United States Army and used during World War II, the
M115 203 mm howitzer on display at Bastrop, Texas, United States.
Howitzer M115 in Iran Army Day parade in Isfahan, 2014.
The 155 mm gun M1 was a 155 mm field gun developed and used by the United States military. Nicknamed "Long Tom", it was produced in M1 and M2 variants, later known as the M59. Developed to replace the
M115 howitzer
…howitzer of the First World War (and most other large artillery), the M1 uses a Welin screw for its breech. The carriage was the same as used for the US 155 mm gun and was also adopted by the British for their BL 7.2-inch howitzer. It consists of a split trail with equilibrator assemblies, elevating and traversing…
Long Tom in travelling position, US Army Ordnance Museum
A wooden mock-up of a modified GPF gun with equilibrators to increase maximal elevation and range, 1920
Long Tom at crew training in England
M2 during the Battle of Okinawa