Martin Marden. 57, a retired Army colonel and an expert in psychological warfare, died of cancer Thursday at a Los Angeles hospital.

Col. Marden was born in Istanbul, Turkey. and grew up in Leipzig, Germany. In 1934, at the age of 13, he and an older sister fled Germany to join their mother, also a refugee, in New York City.

He enlisted in the Army in 1940 and was a translator and interrogator in Europe during World War II.

He served as an adviser in Vietnam in the mid-1950s and helped organize psychological warfare units in Vietnam in the early 1960s.

Col. Marden subsequently served in Korea and with the psychological warfare unit at the Pentagon. His last assignment before retiring in 1970 was in Vietnam.

Col. Marden later became a vice president with the Los Angeles-based LPL Technical Service.

Col. Marden lived in Falls Church and Arlington during the 1950s and 1960s. He was a graduate of the University of Omaha in Nebraska.

Survivors include his wife, the former Eugenie Rigick, of the home in Marina Del Ray, Calif.; a daughter, Judith Claire Marden Pabst, of Arlington, and a son, Mark, a student at George Washington University here; his mother, Betty, of New York City; a brother, Armin, and a sister, Roxanne, both of San Francisco, Calif.