@atlantis you are asking a pretty sharp question (not the only one!). Looking on the strategy at that point in the war; why Longstreet was sent first in support to Bragg; then the aftermath of Chickamauga with the orchestration of dispensing those same forces to Knoxville. Whose idea it was and why, need consideration, and
@lelliott19 makes a good point on the timing! The advantages would have been extreme for the confederacy for supplies. That is a good reason, but was it really just an excuse to separate commands?
Lubliner.