[Rebelbase]

Grant's entire Eastern strategy was to flank left until Richmond/Petersburg was invested while replacing casualties with fresh bodies along the way.

[dinoparty]

Which is exactly what Lee would have done had he had those bodies at his disposal as a Union Commander. Lee took big gambles because he had to ... sometimes they made him look brilliant (eg Chancellorsville), sometimes not (eg July 3, 1863).

And don't forget Grant's successes in Fort Donelson, Vicksburg, and Chattanooga.