cw1865 said:
Rosecrans = McClellan light
Thomas is much more aggresive.
I like Rosecrans, and have for a long time, ever since I read Tucker's book on Chickamauga about 40 years back.
Rosecrans was an aggressive commander -- so much so that I think he benefitted from having Thomas with him to control his impulses. They made a very good team.
Rosecrans was loved by his soldiers, had a contentious relationship with many of his division and corps commanders, seemed to feud with everyone above him (Stanton, Halleck, Grant, McClellan, etc.) Partially this was due to the way in which he would criticize underlings for mistakes (he had a tongue with a rasp like a coarse file). He also seemed to have a talent for picking feuds over small issues with superiors. Even worse, he doesn't seem to have realized the animosity he built up with the feuds and dressing-downs, acting as if they'd be forgotten right after they occurred. In the end, this clobbered him at Chickamauga and afterwards.
On campaign, he was the opposite of McClellan. Where McClellan was cautious the more he was in the field, Rosecrans was bold. Rosey's problem was that he didn't sleep, wore himself out with restless energy, became more and more impulsive. But if you compare Rosey's battlefield actions to Mac's, there is a big, big difference. Rosey would not have had a single problem launching another attack at Antietam; Mac would not have been holding on after the first day at Stones River or Chickamauga, IMHO. Mac could never move with the speed Rosey consistently showed in his campaigns.
But both men were their own worst enemy. The grief they stored up came back to get them in the end.
Regards,
Tim