Paul T. Bannai, chief memorial affairs director of the Veterans Administration, has announced his retirement, effective Sept. 29. Bannai took the VA job in July 1981 and held it longer than anyone since the VA took over the program of managing the national cemetery system in 1973. He said he intends to return to his home in Gardena, Calif.

At the Library of Congress, Ralph Oman has been appointed register of copyrights, effective Sept. 23. Oman, who has been chief counsel of the Senate Judiciary subcommittee on patents, copyrights and trademarks, was selected after a nationwide search. He succeeds David L. Ladd, who resigned in January.

At the Voice of America, career Foreign Service officer Robert L. Chatten has been named deputy director for programs, where he will serve as senior administrative officer of the United States Information Agency's global radio network. A minister-counselor in the senior Foreign Service, Chatten was most recently posted at the U.S. embassy in Mexico City.

And John Fritz, director of the Bureau of Indian Affairs since 1981, has been reassigned to a new post in the Interior Department. BIA spokesman Vince Levitt said Fritz had been relieved of his duties as deputy assistant interior secretary for Indian affairs at his own request and reassigned on an interim basis to the office of undersecretary as a consultant.

The deputy assistant secretary also serves as director of the BIA.