Retired Army Maj. Gen. Robinson E. Duff, 84, who served in two world wars, died of congestive heart failure Wednesday at his home in Falls Church.

His last assignment before he retired in 1953 for physical disability was chief of the Army Security Agency here.

Gen. Duff was born in El Paso, Ill. He attended Purdue Univeristy and was commissioned in the Army infantry in 1917. He commanded an infantry company in World War I.

He later graduated from the Command and General Staff School at Fort Leavenworth, Kan., and the Army War College Here.

During World War II, he was assistant commander of the famed 10th Mountain Division that went into combat in Italy. He was wounded during the closing days of the Italian campaign while leading a task force against the enemy.

Gen. Duff served with the general staff corps of the Army Department here during and after the war. In the late 1940s, he was commanding general of the military compound in Frankfurt, Germany.

His decorations included the Distinguished Service Cross, the Silver Star, the Legion of Merit, the Bronze Star with Oak Leaf Cluster and decorations from Italy, Brazil and Poland.

After retirement, he helped organize and was active in the Lake Barcroft Community Association. He was a Mason and a member of the Sons of the American Revolution.

His wife, Rebecca Mae, died five years ago.

He is survived by a daughter, Mary C. Glowa of the home in Falls Church; two sisters, Edith Duff of Wolcott, Ind., and Grace Sloan of San Diego, Calif., and two grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to the Heart Fund.