There’s an apocryphal conversation that supposedly took place in World War 2 between a German captive and his guard:
German Prisoner: “Not meaning to insult, but in battle, any German tank is the equal to any ten of your Shermans.”
German Prisoner: “Yes, but you always have eleven.”
It’s no joke that American tankers fighting in Europe had to contend with a host of powerful German tanks, using a tank design that although noted for its maneuverability, ease of maintenance and automotive reliability, suffered from inadequate armor and even less adequate firepower. Enter the M10, America’s first serious attempt to level the playing field a bit.
Designed as a tank hunter, mounting a 3-inch gun in an open-topped turret, the M10 had enough kick to penetrate most German side armor at reasonable ranges. Further refinements eventually involved the replacement of the 3-inch gun with more potent weapons, including the British 17 lb. gun. Further development led to the M36 Jackson, still seen on some battlefields around the world to this day.