Note, what follows is for the sake of discussion, as the odds of Nytram changing my mind or vice-versa is poor -but I think between our positions the original poster can get some excellent ideas on what was going on.
And unleashing Forrest had been repeatedly shot down by Davis. Meanwhile, striking at Sherman's columns effectively would require him demonstrating something he failed at Cassville - pressing an attack in the face of difficulties.
I would not be surprised on Wheeler, but Johnston probably could have done better here. At least, he could have spent the time he spent trying to get Forrest's men to replace Wheeler, which would probably have been acceptable if Johnston presented it right (Wheeler being pro-Bragg and vice-versa, but not mattering to Davis, if I'm not mistaken).
Thing was that Wheeler was useful close by. He was skilled at flank guard and picketting duties. He just wasn't a good administrator, tactician, strategist and he hated to scout. And he was, essentially, the Southern version of Custer, believed himself a great cavalryman and sought fame and glory.
On the issue of replacing Wheeler. Johnston had asked for Chase Whiting or Mansfield Lovell to command Breckenridge's old Corps. Davis refused and gave him Hood.
And then there is the story regarding Alexander Stewart's division after Johnston took over. One of Stewart's brigade commanders had been killed or wounded - I'm not sure which - and Johnston recieved a telegram from Richmond asking who should command the brigade now. Johnston rode to Stewart's HQ personally and asked a staff officer - Colonel J.C. Thompson - who Stewart wanted to command this Brigade. He was told that Stewart's choice was Colonel James T. Holtzclaw and he forwarded the message to Richmond. Several days later a Colonel Baker arrived to take command of the brigade. Davis had decided that the man Johnston picked wasn't good enough.
Given Davis's refusal to allow Johnston to choose his own subordinates would there really have been a point in trying to get Wheeler replaced? Davis would have said no just to spite Johnston. He was in that kind of mind with Bragg in his ear and Hood and Wheeler writing to him behind Johnston's back.
Being assigned to Mississippi didn't stop Forrest raiding into Tennessee. There is no reason to suggest he couldn't have raided into Georgia during this time either.Mississippi, aka the department he's assigned to and responsible for?
That came out a bit wrong on my part. It was intended to read "Beauregard only got Hampton because Davis wanted Hampton out of South Carolina"."Only"? That aside, yes, Wheeler has to go for a successful campaign here. Johnston had enough cavalry, but not anyone capable of commanding it.
The silly thing is that when Johnston took command there was a more capable man in the AoT than Wheeler who could have led the AoT's cavalry with greater competance in John A. Wharton but Wharton resigned soon after Johnston took over after quarrelling with Wheeler and was sent out to rot in the Trans-Mississippi.
So you'd dispute it in principal but cannot name a better candidate? Maybe Richard Taylor? He's the only Confederate Army Commander who had any real success in 1864 but his "army" was little more than a division so he had no more experiance than Hood did at commanding a force the size of the AoT.I would have to dispute that, but I don't know anyone I'd genuinely advocate here. There are not enough good generals to go around.
But Brice's Crossroads was pointless in the long run anyway. It was one great tactical victory for Forrest that left the road to Georgia, Tennessee or Mississippi open to him. Pretty much a month later Forrest was beaten by A.J. Smith. Moving back into Mississippi after winning at Brice's Crossroads did nothing to aid the Confederate cause, had he moved into Georgia he could have damaged Sherman's supply lines and slowed the Federal advance rather than just threaten them and scare the Federals like some boogeyman.Snipped the for concision - I think this would be a good idea. Or if not Breckinridge, someone without Bragg's bitterness. Even someone not fond of Johnston but willing to work with him would have sufficed, as long as they could also work with Davis.
But a note: Johnston got all the reinforcements Davis could send him OTL. This has to be noted, whether he was satisfied or no, doing more is in the category of stripping the Carolinias in '63 to aid Lee - as in, what about the problems threatening those area? Forrest leaving Mississippi renders it possible for the Federals to negate Brice's Crossroads, for instance.