Retired Army major general John Francis Regis Seitz, 70, who served the World War II and the Korean conflice, died of pneumonia Tuesday at the Walter Reed Army Medical Center.

Gen. Seitz had been a resident of the University Nursing Home in Wheaton since suffering a stoke in 1972.

A native of Wilmington, Del., he graduated from the U.S. Military Academy at West Point in 1929.

During World War II, Gen. Seitz served in the 1st Infantry Division. He also served as assistant division commander of the 69th Infantry Division, the first U.S. unit to meet the Russians at the Elbe River in 1945. In 1953, he served as commander of the 2nd Infantry Division in Korea.

He also had served in Naples, Italy as chief of staff of the Allied Land Forces for Southern Europe. At the time of his retirement in 1966, he was deputy commanding general of the 1st Army at Governors Island, N.Y.

HIs decorations included th Distinguished Service Medal, the Silver Star (twice), the Legion of Merit and the Bronze Star.

Gen. Seitz' first wife, the former helen Hardenbergh, died in 1952. His second wife, actress Jessie Royce Landis, died in 1972.

Survivors include three children by his first marriage, Joseph F. R. Jr., of Silver Spring. Helen Patterson, of Ridgefield, Conn., and Raymond Seitz, of London: two brothers, Collins Seitz, chief judge of the 3rd U.S. Circuit Court of Appeals in Wilmington, and Alfred Seitz, and a sister, Dr. Margaret Seitz, also of Wilmington, and four grandchildren.