World War I prevented him from pursuing an advanced degree in
Germany. Instead, he joined his father at the company. He was made president of the company in 1925, succeeding his father shortly before his death, while his father became chairman of the board. During the interwar years, he oversaw Merck's involvement in the development of synthetic
vitamins,
sulfas,
antibiotics, and
hormones. During
World War II, he led the
War Research Service, which initiated the
U.S. biological weapons program with
Frank Olson. After relinquishing the title of president, he remained chairman of the board of directors until his death in 1957. He was on the
cover of Time magazine on August 18, 1952, illustrating a story about the American drug industry. ==Philanthropy==