Statistics for occurrence #1 of “Major-General W. S. Rosecrans” in year 1862, month October, day 30 of Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864:

...amer Kensington, in the vicinity of Sabine Pass, Texas. In obedience to orders from the War Department, Major-General Buell transferred the command of the department and the army of the Ohio to Major-General W. S. Rosecrans .
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