Patton Would Approve (M60 Patton)
That above is an M60 Patton. The M60 and its variants served as the main battle tank for the US Army up until it was finally replaced by the M1A1 Abrams in 1997. Coming into service in 1960 it was manufactured until 1987 with over 15,000 units being built during that time. Of course, there are still numerous units in service not only in the US military but in the military of many countries around the world. The story though is how it came about.
In 1956 the people of Hungary rose up against the Soviet-backed government for a period of several months actually posed a threat to Soviet control. Though not successful the several months that the revolt lasted provided some interesting information. At one point a Soviet T54A tank found itself sitting the front yard of the British Embassy in Budapest.
Not ones to miss an opportunity the British examined the armor and armament of the tank and were impressed. The T54 mounted a 100mm gun, much more powerful than what the NATO forces of the time could muster. Soon the British and Americans were working on 105mm cannons and were looking for chassis to place them on. The US decided that they would use the M48 chassis, with the new 105mm cannon. The new design was christened the 105mm Gun Full Tracked Combat Tank M60. Unofficially it carried over the Patton designation and began a stellar career that stretched across many wars and continents.
Though officially retired in 2005 the US still maintains a number of them in storage. Even more impressive is that some of the special variants. The M728 Combat Engineer Vehicle and the M60AVLB still are in service.