Forty-Ninth Regiment Infantry Iowa Volunteers
Was mustered into the U.S. service June 2, 1898 at Des Moines, left Des Moines for Jacksonville, Fla. June 11, 1898, when it was moved to Cuba.

Fiftieth Regiment Infantry Iowa Volunteers.
Was mustered into the U.S. service May 17, 1898 at Des Moines, left Camp McKinley, Des Moines, May 21, 1898; arrived at Jacksonville, Fla., May 24 and 25, 1898; left Jacksonville, Fla., for Des Moines, September 13, 1898; arrived in Des Moines, September 17, 1898; mustered out, November 30, 1898 after having been in service 202 days.

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Compiled list of Spanish-American War veterans from Dubuque co. Iowa:

Ballough, Jacob R., First Lieutenant, Dubuque, date of commission April 26, 1898; Company A, Forty-Ninth Regiment Infantry Iowa Volunteers

Blocklinger, Benjamin F., Major; Dubuque, commissioned April 26, 1898; Forty-Ninth Regiment Infantry Iowa Volunteers

Collinson, Henry, Company M, 49th Iowa Volunteers

Flynn, W.M. Captain, Dubuque, date of commission April 26, 1898; Company A, Forty-Ninth Regiment Infantry Iowa Volunteers

Ham, Clifford D., Lieutenant-Colonel, Dubuque, commissioned April 26, 1898; Forty-Ninth Regiment Infantry Iowa Volunteers

Hosford, Richard W., Second Lieutenant, Dubuque, date of commission May 9, 1898; Company H, Fiftieth Regiment Infantry Iowa Volunteers

Jaeggi, Albert M., Captain and Adjutant, Forty-Ninth Regiment Infantry Iowa Volunteers

Lobdell, Charles E., Private, Dubuque, Company A, Forty-Ninth Regiment Infantry Iowa Volunteers

Stewart, Charles J., Second Lieutenant, Dubuque, date of commission April 26, 1898; Company A, Forty-Ninth Regiment Infantry Iowa Volunteers


~sources:
1) 1899 Iowa Official Register; Official Roster of the Officers, Iowa Volunteers - Spanish American War.
2) Dubuque co. obituary board
3) Dubuque co. biography board
4) Spanish-American War Centennial Website