The M114 was not as lucky as her older sister, a mount who found success in the Vietnam War and essentially ushered the way for the smaller M114. The newer M114 served a short operational life in service with the United States Army, seeing some action in the conflict though being subsequently forced into early retirement after just a few years of use. In all, her tenure would last just over a decade. Her reconnaissance value in the Vietnam War was eventually replaced by the more capable, four-man M551 Sheridan light reconnaissance tank of 1969 mounting its powerful 152mm main gun. Key limitations of the M114 became her poor mechanical reliability, especially when exposed to the rigors of the jungle environment. She was also deemed underpowered for the cross-country role and lacked much in the way of crew protection - particularly from land mines. Her hull also proved less than desirable when attempting to cross ditches and fording streams proved a chore. The M114 was removed from Vietnam War service as soon as November of 1964. It was not until 1973 that General Creighton Abrams formally brought about the retirement of the M114 from the US Army inventory - labeling the little machine as a "failure".
Whereas the M113 was specifically designed to transport combat-ready troops to battle zones while offering some level of protection, the diminutive M114 was specifically categorized as a "Command and Reconnaissance Carrier" built for speed and concealment from foes - ready to dictate enemy positions, movement or reactions ahead of a main operating force. As such, she remained a much lighter and smaller prospect - even capable of being air-dropped - when compared to the M113 and featured one less road wheel to a track side. Both the M113 and M114 were amphibious allowing them to traverse certain bodies of water though with some prior preparation, being propelled through the water by the power of their turning tracks. The M114's drive sprocket was held at the front of the hull (near the engine) with the track idler at the rear. No track return rollers were present.
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