Trivial Trivia - taking trivia to new levels

[STS Lincolnite]

Hint #6: The person was a CW general. (Where is Miss Booth??? Where Wild Bill?)

Right away when I saw the lemon, I thought of Thomas "Stonewall" Jackson who was known for sucking on lemons, but I didn't get the connection to the picture (except that there was a lemon in it). Jackson died as the result of a friendly fire incident. His last words were "Let us cross over the river, and rest under the shade of the trees."