Roy G. Green has been appointed Washington director of the United States League of Savings Institutions. Green was formerly chairman of the league.

William T. Duncan has been elected senior vice president of American Security Bank's real estate division. John M. Sanders has been elected senior vice president and general auditor in American Security's audit division.

Fred J. Martin has been appointed Washington representative of the Bank of America. He succeeds senior vice president Peter M. Nelson, who has been appointed head of BankAmerica Corp.'s new export trading company in San Francisco.

Carroll E. Amos has been elected senior vice president and chief financial officer of Washington Federal Savings and Loan.

John A. Trotter has been promoted to vice president of First Virginia Bank.

Patricia J. Ray and Mary M. Dubos have been promoted to assistant vice presidents at Madison National Bank. Donald C. McVearry has been promoted to senior auditor. Shirley D. Anthony, Deborah A. Babb, Michelle P. Riley and Graydon E. Vann Jr. have become assistant cashiers.

Scott W. Elkins has been promoted to senior vice president of First & Merchants National Bank. Nicholas W. Raymond was elected assistant vice president and Daniel L. Nichols was named assistant cashier.

Charles C. Tharp has been appointed deputy executive director of the Pension Benefit Guaranty Corp.

First American Savings and Loan Association has announced the following promotions: Neil C. Copeland, vice president and controller, Judy Maat, assistant controller, and Velma Washburn and Janet Pagin, assistant vice presidents.

Ernest Marx has been elected to the board of directors of Capital Bank N.A. Marx is president and treasurer of Saks Inc., a local retail firm.

Arthur E. Foster has been elected to the board of directors of Continental Federal Savings & Loan Association. Foster is president of Foster Brothers Inc., a Fairfax development firm.

Pam Jones has been appointed manager of the John Hanson Savings and Loan Wintergreen region.

Carol A. Ramirez has been named Montgomery County legal services officer at Maryland National Bank.