One problem with this. The railroad which ran thru Franklin had nothing to do with the one which ran from Nashville to Chattanooga. The railroad thru Franklin connected Nashville and Decatur, AL.
Incorrect. This RR connects Nashville to Chattanooga along the route Nashville-Franklin-Spring Hill-Columbia-Pulaski-Athens-Decatur-Hunstville-Stevenson-Bridgeport-Chattanooga. It is a longer route, more exposed to Confederate raids from MS and AL, and one Forrest thoroughly ripped up in September (six weeks to repair). The USMRR used it for trains returning from Sherman's Army (Northbound traffic) to free the Nashville-Murfreesboro-Wartrace-Tullahoma-Cowan-Stevenson section for the heavier southbound trains carrying Sherman's supplies.
Both routes use the same track from Stevenson to Bridgeport to Chattanooga. Cut the RR there, and all of Sherman's suppplies are cut off (except for what he had in depots below there, or could forage on the countryside). Supplies include bullets, and at one point in the Atlanta Campaign Sherman had been using 200,000 rounds of small arms ammo/day.
If Hood crosses at Gunter's Landing, he is 43 miles from this crucial RR at Stevenson. That's two days hard march for fast-moving infantry; one day for cavalry. That is the point of crossing at Gunter's Landing -- and every step Hood takes West from there makes the threat to the Sherman LOC weaker and less believable.
That said, Hood did want to cross at Gunter's. The problem is he couldn't, or didn't think it was feasible.
Yes, it is true that he decided to change his plan. But I know of no person who can clearly say what caused him to make that decision. It was certainly risky, but there was no force there that could stand up to Hood's Army -- and the force in the fortifications at Decatur was
stronger.
As to what Hood is doing wandering about, here's what a very frustrated Beauregard had to say:
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In pursuance of orders I repaired to the headquarters of General Hood, at Cave Spring, Ga., on or about the 9th of October, and there conferred with him in regard to his future movements. General Hood is, therefore, in error in saying that I joined the army at Gadsden, Ala. Being at the time unprovided with my staff and horses, and desirous also to confer with Lieutenant-General Taylor, I hastened thence to Jacksonville, Ala., which had then become the new base of operations, intending to return in the event a battle should become probable.
On the 19th of October, supposing that General Hood was near Alpine or Summerville, Ga., I proceeded to rejoin the Army of Tennessee. In the meantime, however, he had commenced his movement toward Middle Tennessee without advising me, and had marched as far as Gadsden--a fact which I ascertained at Round Mountain IronWorks (in advance of Center)--when, retracing my steps, I joined him on the 21st of October.
In an interview with General Hood he informed me that he was then en route to Middle Tennessee, via Gunter's Landing, on the Tennessee River. At Gadsden I had conferences during two days with him in relation to the future operations of the army, in the course of which he stated that his general plan had been submitted to and approved by General Bragg, then commanding the Armies of the Confederate States. In view of existing condition of affairs the movement then in progress met my approval also, for reasons, some of which are as follows:
First. General Hood alleged that Sherman was short of provisions and forage at Atlanta, while his wheel transportation was in wretched condition.
Second. That the destruction of the railroad near Marietta and Dalton by our forces had been so thorough it would require at least five or six weeks to repair it, during which the Army of Tennessee could be thrown into Middle Tennessee, via Gunter's Landing, distance about forty miles from Gadsden, and destroy the railroad bridges at Bridgeport and across the Elk and Duck Rivers before Sherman could finish the repairs of the road below Chattanooga, thus forcing him to return to Tennessee to protect his communications and obtain supplies.
To add to the chances of success I remained two days at Gadsden after the departure of the army, to issue the necessary orders to secure railroad communications in Mississippi and Middle Alabama for the transportation of supplies, and to direct Major-General Forrest, who was then operating in West Tennessee, to report to General Hood with his command.
While en route to Gunter's Landing I learned, casually and to my surprise, that the line of march of our forces had been changed to one in the direction of Decatur, at which point I overtook it, and where the enemy was found strongly intrenched. As it was impossible to effect a crossing without great and unnecessary sacrifice of life, it was now judged proper by General Hood to attempt a passage, first, at Lamb's Ferry, that failing, then at Bainbridge, or, finally, at Tuscumbia, which had become our base of supplies. He determined, however, soon after leaving Decatur, to undertake the passage of the river at the latter point, which he reached on the 30th of October. There and at Florence, on the opposite or north bank of the Tennessee, he remained until the 21st of November.
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Hood abandons this entire plan and spends six weeks out of touch with Sherman and his forces -- which is why Sherman has the leisure to prepare for his March to the Sea. Hood is also completely wrong about the damage he has inflicted on the RR at the start. If you study Hood's actions and decisions, you'll find they are constantly made for bad reasons and lead to further problems down the line.
Tim