[1] The rear compartment carried the gun crew and other equipment and some later variants included a crane to assist with heavier projectiles.

[1] After WWII, under the US Mutual Defense Assistance Program, M4s was supplied to Greece, the Netherlands, Japan, Brazil, Yugoslavia and Pakistan and several other states friendly to the USA.

[1] In the Indo-Pakistani War of 1965, the Pakistani Army used M4 tractors to haul their M115 howitzers to the battlefield of Chamb and then to the front at Lahore during the fighting with Indian troops.

[citation needed] After the war many types of these tractors were stripped of their military components and used for log skidders and power line construction.

During the mid-80s and into the early 90s, many M-4s were converted into exhibition vehicles used for car crushing and dubbed "monster tanks", William Townes's "Virginia Beach Beast" Chevrolet K-5 Blazer being among the first.