Johnston's Army of the Shenandoah in 1861 is arguably the most professional army on the Continent and has probably the best command chain there is at that time. Beauregard's Army of the Potomac (CS) is much less professional but has an established command chain. Taking over at 1st Manassas Johnston merely had to bring order back to an establish command chain and get the units in the right place - that's a big differance to creating a command chain potentially in the midst of battle, as may have been the case at Jackson.
Well I suppose if we consider the Army of the Shenandoah (and Beauregard's army) to be a division...yeah, okay.
Still a matter of assembling something that consists of multiple brigades with nothing between them and the "army" commander.
Still, I I'm not sure I would call it the most professional army on the continent, even ignoring the British army.
Even so, Johnston is not being expected to do something that requires a particularly fine tuned command structure.
When Johnston arrives he is told by Gregg and W.H.T. Walker that Sherman's corps has gotten between Jackson and Vicksburg. He tell's Davis he is too late as the Federals have gotten between the two Confederate forces and split them apart. Gregg, however, tells Johnston that Sherman is isolated and so Johnston tell's Pemberton to advance on Sherman with as much force of the Army of Mississippi as he can to break through and reach him, in the meantime he will try to hold Jackson as long as possible. While Pemberton sleeps on his orders then holds a council of war where he decides to disobey them Johnston learns that Sherman isn't isolated but has McPherson's Corps alongside him and they are advancing on his position, meaning that the majority of Grant's Army of the Mississippi is advancing upon him.
Johnston thus makes the decision to abandon Jackson so as to protect the few men he has in the hopes that he can divert Pembeton north to Canton so the two can link up and present a united front against the Federals but the fact that Pemberton has attempted to march south instead of east and is no where near where Johnston expected him to be, plus the fact that a Confederate traitor took a copy of Johnston's orders to McPherson's HQ lead to the defeat of the AoM at Champion Hill and the Confederate forces are kept seperate.
Johnston traded Jackson for time with the intention of linking up with Pemberton so they could face Grant on more equal footing but it didn't work. Considering Pemberton ignored Johnston's orders anyway Johnston could accomplish nothing by defending Jackson. He didn't have the manpower or material to hold it indefinitely.
No one is asking for "indefinitely". What is being expected is for him to do something to try and hold it as long as possible instead of get out as soon as possible. Failing that, to retreat towards Pemberton, not away from him.
Is Pemberton being a twit? Definitely. But things aren't being helped by having less assistance from Johnston.
Furthermore it wasn't just Sherman and McPherson who were advancing on Jackson. Grant was with them. Grant actually spent the night after the capture of Jackson in the Hotel room Johnston had used. If Sherman and McPherson proved unable to move such a small defensive force as could be deployed by the Confederate then certainly Grant was capable of moving them.
I'm all for praising Grant, but I think this is painting Johnston's situation as completely untenable to the point even trying to fix it is unrealistic.
Johnston was extremely sensitive to the matter of rank and seniority - mainly because it was pretty much all he had except his father's revolutionary sword and pistols and the loving company of his wife - but it wasn't as if this is a secret we discovered in hindsight. The whole US Army pre-war knew that Johnston was obsessed with matters of rank and seniority, Davis himself had had to deal with one of Johnston's quarrels with the US government on such a matter when he was secretary of war so it wasn't as if he was completely unaware that ranking the generals as he did would make Johnston upset.
Confederate Law stated that ranks and seniority in the new army would be determined by ranks and seniority in the old army and by that Johnston, as the only general to leave the Union for the Confederacy, would have expected to be ranked top but Davis manipulated Confederate Law to give his friends the better deals. He forced through amendments that made it so an officer could only claim relative rank to their US one in the arm in which you currently served. This accounted quite legally for Johnston's fall from 1st to 4th in Confederate rankings while also promoting Davis' friends Samuel Cooper and Albert Sidney Johnston to 1st and 2nd respectively.
However Davis neglected to explain this to his generals and when Johnston's unusally passionate letter reached him all he sent back in reply was a message stating that Johnston's arguments were one-sided, unfounded and unbecoming.
Since that is exactly what they are - I am not remotely sympathetic. And I'm reasonably sure Davis did spell out that it was based on field rank seniority (though possibly not about "the arm of the service they were in").
Don't quote me as an authority until I hunt down a source, but I'm sure I've read that.
But Davis didn't give Johnston any support even in the direct aftermath of 1st Manassas.
Davis let the War Office, the Confederate Congress and the Adjutant General interfer at will in the running Johnston's department and Army in Northern Virginia in 1861.
Interfere defined as? Defined as opposed to the role they're supposed to play, that is.
No, I'm not saying all went as its supposed to - but that's where a reasonable, persuasive general responds to the situation with a mixture of logic and charm to address the problem, not where one acts as if this is the beginning of the Seven Punishments of Joseph.
When Davis himself ordered Johnston to pull back from the position at Centerville to less exposed positions along the Rappanhannock and Johnston followed those orders Johnston recieved a minor rebuke for withdrawing - cause Lee had arrived in Richmond and expressed dissapointment to Davis that the withdraw had happened. Davis, further, permitted Lee and the War Office to order around troops in Johnston's department without keeping Johnston informed, sometimes even countermanding orders Johnston had already issued, and let Johnston become completely isolated on the Peninsula with no up to date news of what was happening elsewhere.
What are we defining as Johnston's department anyway? Looking at this as a consequence of Davis's cheerful forming of departments that really should have been merged. Having (for instance) the Valley be technically separate in some arcane way would suit Davis entirely too well.
Picking the Valley just for the sake of example.
After Johnston returned from his injuries Davis gave him the Department of the West Command but retained all the real power for himself. He made the Department Commanders job obsolete by making it not only acceptable but pretty much manditory for all officers in the West, from Army command downwards, to send him their reports, inquries and whatnot without sending them through Johnston or even informing Johnston that they had sent anything at all. Davis refused to give Johnston any freedom in moving any troops anywhere without Presidential approval. Davis reduced Johnston's role to simply a glorified quartermaster who only dealt with mundane paperwork.
And Johnston's attempts to address this were the voice of reason and charm, calculated to make anyone except Davis understand how he could do a lot more if he could get those reports sent to him.
Or maybe they weren't, and Johnston's failure to do anything with the position made Davis act because Johnston wouldn't.
After the failure of the Vicksburg Campaign Johnston and Davis' relationship was unreparable. Davis tried to pin sole blame for the failure on Johnston's shoulders and have him courts-marshalled.
So Davis certainly showed very little trust in Johnston from a very early period of the war and he certainly put very little effort into resolving their personal feud either.
A few words of support could have helped. Not saying it would have solved everything but it certainly would have improved their relationship. Fact is that Davis treated Johnston with high-handed dismissal from a very early point in the war and expected to be treated with respect in return. Davis did very little to create a good working relationship with Johnston and certainly did pretty much nothing to heal any hurt between them.
Fact is also that Johnston never tried to build anything remotely resembling a constructive response or to do anything but act like a persecuted victim either.
I'm not a fan of Davis. I'm just even less of a fan of the guy who throughout the war acted as if he was nothing but a scapegoat and a victim and who constantly came up with excuses for falling short of expectations.
It does not seem to have occurred to him that being that kind of person was confirming Davis's lack of confidence in him.
Even Lee's few words of support in 1865 improved Johnston's mindset and had Davis been willing to offer him something similiar - honestly or otherwise - it would have gone a long way to convince Johnston that Davis might actually have some faith in him and wasn't just setting him up to take the fall.
The fact that Davis never gave Johnston any real support and showed very little faith in him from very early on was just as much a reason for their very poor relationship as Johnston's poor communication and consorting with Davis' opposition was.
The fact that Johnston never tried very hard to present his position in a way that would persuade an opponent makes it rather difficult in Davis's position (but not on his side) to accept his judgment. And that Davis is just setting him up to take the fall...Davis had issues coming out of his behind, but this is part of why I have such a hard time being sympathetic to Johnston. Its not enough that Davis and he can't get along personally. Its not enough that he has reason (to his lights) to think Davis is being unreasonable. Davis
is out to get him. Right. Sure.
But as an example of why I look at Johnston as whining:
Take what he did around Atlanta in 1864. Davis asks him for his plans in some kind of useful detail so that he (Davis) can work with them.
Johnston...doesn't provide. What is Davis supposed to do? Just blindly trust that Johnston will do what he's never looked like he would do before?
Johnston, who has made it clear he opposes the president's strategy and sides with his (Davis's) opponents and communicates more with them than with him?
I like to think of myself as fair minded, and I know that's not altogether true (and probably this is an example), but I can't look at this in a favorable light no matter how much I agree he was in a mostly no-win situation at Vicksburg, as an example of something where Davis was at his worst (not just in regards to Johnston).
To turn this back to your what if (I don't mind the argument but I think we're getting bogged down into a general debate on Johnston), I think that Johnston will treat the AoT and its situation as exactly the kind of no-win situation that proves Davis is out to get him.
Its in a terrible position logistically. Its outnumbered (even without sending more troops in the late spring/early summer of 1863 - partially because Johnston was calling for them - in Mississippi), outgunned, has a cavalry force that can best be described as under-performing, and is expected to hold a position I'm not sure even an aggressive and optimistic commander would describe as favorable.
And this is assuming Davis does nothing other than hand over command to Johnston and expect him to hold Tennessee. God have mercy if he expects an attack (unrealistic, not necessarily out of character, and probably expected).