in what other ways has he served his country?
He was the 25th president of the United States.
William McKinley
William McKinley (January 29, 1843September 14, 1901) was the 25th president of the United States from 1897, until his assassination in 1901. 
what is mckinley birthplace memorial gold dollar? a commemorative coin who struck it? United States Bureau of the Mint who was the designer? Charles E. Barbe and George T. Morgan what design can you see on the obverse and reverse? The obverse of the dollar features an unadorned bust of McKinley, facing left, with the name of the country above and "McKinley Dollar".The reverse is intended to be a facing view of the McKinley birthplace memorial in Niles . the person you just mentioned, was he a part of any war? Yes,  the American Civil War what was his role in this war? an enlisted soldier was he assassinated? Yes
wiki:19666940
William McKinley [SEP] Introduction
William McKinley (January 29, 1843September 14, 1901) was the 25th president of the United States from 1897, until his assassination in 1901. During his presidency, McKinley led the nation to victory in the Spanish–American War, raised protective tariffs to promote American industry, and kept the nation on the gold standard in a rejection of the expansionary monetary policy of free silver. McKinley was the last president to have served in the American Civil War and the only one to have started the war as an enlisted soldier, beginning as a private in the Union Army and ending as a brevet major.