into the United States Army, where he served as an infantryman with the 104th Infantry Division, landing in Cherbourg, France, in September 1944. He earned a European-African-Middle Eastern Campaign Medal with two campaign stars, a World War II Victory Medal, and the Combat Infantryman Badge for service in the European Theater of Operations. After V-E Day, because he could speak German, Koch was sent to Bavaria to help remove Nazi public officials from their jobs and find non-Nazis to take their place. He was honorably discharged with the rank of Sergeant in 1946. Koch returned to New York City to attend City College of New York, graduating in 1945, and New York University School of Law, receiving his law degree in 1948. Koch was a sole practitioner from 1949 to 1964, and a partner with Koch, Lankenau, Schwartz & Kovner from 1965 to 1968. A Democrat, he became active in New York City politics as a reformer and opponent of Carmine DeSapio and Tammany Hall. In 1962 Koch ran for office for the first time, unsuccessfully opposing incumbent William Passannante, a DeSapio ally, for the Democratic nomination for the State Assembly. In 1963, Koch defeated DeSapio for the position of Democratic Party leader for the district which included Greenwich Village, and Koch won again in a 1965 rematch. Koch served on the New York City Council from 1967 to 1969. Career Elections 1968 Koch ran for Congress in New York's 17th congressional district after Republican Theodore Roosevelt Kupferman retired. He defeated Republican Whitney Seymour Jr. and Conservative Richard J. Callahan, who partly split the conservative vote. He won 48.5% of the vote to Seymour's 45.6% and Callahan's 5.9%. 1970 Koch was reelected with 62% of the vote, defeating Republican Peter J. Sprague and Conservative Callahan who finished with 32% and 6%, respectively. 1972 In advance of the 1972 elections, Koch's district was redistricted into the 18th district. He defeated Republican Jane Pickens Langley and Socialist Workers nominee Rebecca Finch, 70%–29%–1%. 1973 Koch briefly ran for mayor in 1973, but garnered little support and dropped out before the Democratic primary. He threw his support to State Assemblyman Albert H. Blumenthal, but Blumenthal's bid was derailed by a scandal and he came in third. Comptroller Abraham Beame won the election. 1974 Koch won reelection (with career-best 76.7% of the vote) to the 18th district against John Boogaerts Jr. (Republican, 18.8%), Gilliam M.