George Patton 11 Nov 1885 59 at ETO surrender
Dwight Eisenhower 14 Oct 1890 54 at ETO surrender
Ulysses Grant 27 Apr 1822 43 at Appomattox
George Custer 2 Dec 1839 37 at Little Bighorn
Robert E Lee 19 Jan 1807 58 at Appomattox
Arthur Wellesley 1 May 1769 46 at Waterloo
Charles Gordon 28 Jan 1833 51 at Khartoum, younger in China wars
Erwin Rommel 15 Nov 1891 52 at time of 'suicide'
I suspect that we have a fundamental division between tactics, strategy, and logistics.
...and General George Washington won the Revolutionary War at 52.