How about that the Abrams entered service in February 1980, while the first Sherman was accepted in February 1942. Which means, of course, at this point we're farther from the introduction of the Abrams than the introduction of the Abrams was from the introduction of the Sherman...
How far we have come from 1942 to now is astounding. Cure for cancer, over/under 25 years.
But Ma Deuce is still in service!
Centenary of first model in two years.