M40 SP 155mm Howitzer carried the 155mm Long Tom gun on a Sherman tank chassis. This was the ultimate example of American self-propelled armored artillery used in World War Two. The M40 used a lengthened and widened Sherman tank chassis. Although fielded too late for extensive combat in World War Two the M40 did serve well in the Korean War and the Cold War. The M41 was a similar vehicle but mounted the 203mm howitzer and is a simple conversion.
M40 SP 155mm Howitzer