Thanks. I found these Confederate Military Records:
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ROSTER, CO. A, 5th MISSOURI INFANTRY REGIMENT (Confederate)
GREENWOOD, William Private Johnson County farmer, born Lafayette County, Mo. Enlisted 12/2/61 at Warrensburg, age 16. Fought at at Vicksburg (May 18 – July 4, 1863) Captured 4 July 1863 Warren Co., MS. Paroled. Went home and joined Quantrill, along with brother Edward.
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GREENWOOD, DANIEL Civil War 5th Missouri Infantry 1st Brigade A

GREENWOOD, GEORGE Civil War 5th Missouri 1st Brigade Infantry A

GREENWOOD, WILLIAM W. Civil War 5th Regiment Infantry Volunteers A

GREENWOOD, JAMES T. Civil War 5th Missouri Regiment Infantry Volunteers A
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I have no idea who James T. was, but he was in the same unit, it appears. Still trying to find out.
George probably died in the war. Still looking. I have someone checking Howard Co. cemetery books for William.
Jim