Stonewal Jackson, killed at Chancellorsville - after which neither Lee nor his army was quite the same again.
Another answer could be cavalry leader Jeb Stewart who was Lee's eyes and ears at many battles, but helped him to lose Gettysburg, and was killed at Spotsylvania.
Provided that General "Stonewall" Jackson was Lee's right-hand man, his left-hand man should had been J.E.B Stuart or General James Longstreet.
General Thomas J (Stonewall) Jackson.
Virginia.
Lees horse, Traveller had lived for several years after Lees death in 1870.
He was a Confederate general
Lorraina Teddy Lee
His Confederate uniform hat was grey.
white
Traveler
college president
Virginia.
Lees horse, Traveller had lived for several years after Lees death in 1870.
Anne Hill Lee.
He was a Confederate general
Mary Anna Custis Lee
Lorraina Teddy Lee
His Confederate uniform hat was grey.
June 30th, 1831.
Washington and Lee College