After graduation Cochran initially practiced law in
Baltimore for two years but struggled financially. He returned to Staunton in 1936, became a member of the Virginia bar and began practicing law with his father. Six years later, World War II erupted, and Cochran served in the
U.S. Navy, mostly in the Pacific from 1942 until 1946, as he refused desk and legal jobs and sought those involving amphibious service. In 1964, the former family law firm became Cochran, Lotz and Black. From 1947 to 1969, Cochran also was a trustee of Staunton's Planter's Bank and Trust Company, and was the bank's president during the last six of those years. After the war, University of Virginia trustee
Emily Pancake Smith urged Cochran to run for the legislature, and boards of visitors at
Virginia Tech (1960-1968) and
Mary Baldwin College (1967-1981) and as a trustee of the
Virginia Historical Society. Cochran won election unopposed to the
Virginia House of Delegates in 1947, representing
Augusta and
Highland counties and the cities of Staunton and
Waynesboro. He served from 1948 to 1965 (that becoming the 10th district after the post-1960 census redistricting). The
Senate of Virginia had major redistricting in 1965. Cochran ran in what had become the 19th District (comprising Augusta, Rockbridge and Highland counties and the cities of Staunton, Waynesboro, Buena Vista and Lexington) and would soon become the 21st district). Augusta, Bath and Highland counties and the cities of Staunton and Waynesboro had been in the 21st district in 1963 and 22nd district in 1961, and represented by longtime Byrd lieutenant
Curry Carter (who had narrowly defeated Republican Winston Wine in 1961). Now, Democrat Cochran won overwhelmingly, with over 94% of the vote against Republican Winston Wine, who won just 5%. Cochran served only two years in the Virginia Senate, because after the U.S. Supreme Court decision in
Davis v. Mann, another new redistricting plan took effect and Republican
H. Dunlop Dawbarn of
Waynesboro defeated him in the next election, perhaps as a result of sympathy for losing his wife or outrage over Cochran's distancing himself from the
Byrd Organization. In the General Assembly, Cochran had been one of the "Young Turks," World War II veterans who disagreed with the Byrd Organization on many education and civil rights issues, although he was not as liberal as
Armistead Boothe of
Alexandria. They introduced measures to abolish
Jim Crow laws and the poll tax, which didn't pass until much later; and the Organization retaliated by limiting their committee assignments. Like Boothe,
Mosby Perrow Jr. and
Tayloe Murphy, Cochran advocated keeping schools open during Virginia's "
Massive Resistance," whereby
U.S. Senator Harry F. Byrd, Sr. vowed to prevent public
school desegregation after the
Brown v. Board of Education Supreme Court decisions. After January 19, 1959, when both a three-judge federal panel and the Virginia Supreme Court declared the
Stanley Plan of various laws adopted in a special 1956 legislative session unconstitutional, Governor
J. Lindsay Almond and Lieutenant Governor
Gi Stephens broke with the Byrd Organization's decision to continue Massive Resistance. They narrowly secured legislative approval of a commission chaired by Senator Perrow to craft the Commonwealth's response to "Brown II." Cochran was among the
Perrow Commission's members and later described its work in dismantling Massive Resistance for the Augusta Historical Society. Historian Katharine Brown considered Cochran "one of just a small handful of people that had the courage to buck the dominant opinion in Virginia of massive resistance.... That took courage and was a remarkable thing that he did." Cochran later took pride in helping to convince Governor
Mills E. Godwin, another leader of Massive Resistance, to support creation of Virginia's community college system. President of the
Virginia Bar Association in 1966, Cochran also served as a member of the Constitutional Revision Commission of Virginia in 1968-69. He was also a fellow of the American Bar Foundation, and of the American College of Probate Law, as well as charter fellow of the Virginia Bar Foundation. From 1986 until his death, Cochran also chaired the
Frontier Culture Museum of Virginia in Staunton. ==Judicial career==