Harry S. Truman previously served as U.S. Vice-President in 1945 under Pres. Franklin D. Roosevelt.
Harry S. Truman was a Baptist.
From: Richard N. Ostling (Associated Press), "Old custom: U.S. presidents tangle with their religious denominations", published 9 February 2003, in The Post & Courier (Charleston, South Carolina) (http://charleston.net/stories/020903/rel_09prez.shtml; 6 July 2003 version of page viewed via archive.org on 29 November 2005):
..."It's relatively easy for presidents to get on the outs with their denominations," says Wake Forest University Divinity School Dean Bill J. Leonard. It's hard to find a 20th-century president who didn't butt heads with some in his faith:
...Harry Truman, the first Southern Baptist in the White House, annoyed some in that denomination by spouting "hells" and "damns" in conversation. Jimmy Carter angered Baptist pastors by favoring abortion rights.
...Ultimately, Southern Methodist University ethicist Robin Lovin says, politicians' moral judgments are influenced far less by today's church pronouncements than by their religious upbringing. The sermons, discussions and Sunday school classes in their home congregations many years ago may be their guide.
From: Political Graveyard website (http://politicalgraveyard.com/bio/trippe-trumbo.html#R9M0JFND1; viewed 29 November 2005):
Truman, Harry S. (1884-1972) - also known as "Give 'Em Hell Harry" - of Independence, Jackson County, Mo. Born in Lamar, Barton County, Mo., May 8, 1884. Grandnephew of James Chiles; married, June 28, 1919, to Elizabeth Virginia "Bess" Wallace. Democrat. Major in the U.S. Army during World War I; county judge in Missouri, 1922-24, 1926-34; U.S. Senator from Missouri, 1935-45; delegate to Democratic National Convention from Missouri, 1940, 1944, 1952, 1960; Vice President of the United States, 1945; President of the United States, 1945-53; candidate for Democratic nomination for President, 1952. Baptist. Member, American Legion; Freemasons; Knights Templar; Eagles; Elks; Lambda Chi Alpha; Phi Alpha Delta. Two members of a Puerto Rican nationalist group, Griselio Torresola and Oscar Collazo, tried to shoot their way into Blair House, temporary residence of the President, as part of an attempted assassination, November 1, 1950. Torresola and a guard, Leslie Coffelt, were killed. Collazo, wounded, was arrested, tried, and convicted of murder. Died at Research Hospital and Medical Center, Kansas City, Jackson County, Mo., December 26, 1972. Interment at Truman Presidential Library and Museum, Independence, Mo.
From: Peter Roberts, "Harry S. Truman" page in "God and Country" section of "Science Resources on the Net" website (http://www.geocities.com/peterroberts.geo/Relig-Politics/HSTruman.html; viewed 29 November 2005):
Religious Affiliation: Baptist
"We have gone a long way toward civilization and religious tolerance, and we have a good example in this country. Here the many Protestant denominations, the Catholic Church and the Greek Orthodox Church do not seek to destroy one another in physical violence just because they do not interpret every verse of the Bible in exactly the same way. Here we now have the freedom of all religions, and I hope that never again will we have a repetition of religious bigotry, as we have had in certain periods of our own history. There is no room for that kind of foolishness here." -- Mr. Citizen, 1960