Ulysses S. Grant,
Personal Memoirs of U. S. Grant…
“ I knew the peril the Army of the Cumberland was in, being depleted continually, not only by ordinary casualties, but also by having to detach troops to hold its constantly extending line over which to draw supplies, while the enemy in front was as constantly being strengthened. Mobile was important to the enemy, and in the absence of a threatening force was guarded by little else than artillery. If threatened by land and from the water at the same time the prize would fall easily, or troops would have to be sent to its defence. Those troops would necessarily come from Bragg. ”
