 Ambrose also taught at Louisiana State University (assistant professor of history; 1960–1964) and Johns Hopkins University (associate professor of history; 1964–1969).He held visiting posts at Rutgers University, the University of California, Berkeley, and a number of European schools, including University College Dublin, where he taught as the Mary Ball Washington Professor of American History.He founded the Eisenhower Center at the University of New Orleans in 1989 serving as its director until 1994.