Sultan next was district engineer in Chicago, leading construction of the Great Lakes to Mississippi Waterway to July 1934.

Sultan had various other commands during early World War II, including the 38th Infantry Division and VIII Corps.

[4][5] Sultan taught at West Point in the department of engineering and served as an assistant football coach from August 24, 1912, to July 18, 1916,[6] and was made a captain on February 27, 1914.

As Chief of the Personnel Section in the Office of the Executive Assistant to the Chief of Staff of the Army during the war and the demobilization, Colonel Sultan formulated policies covering commissioned personnel and handled with marked ability many complex questions of grave importance to the War Department and to the entire Army.

His splendid judgment and the sound policies initiated by him contributed in a large measure to the successful handling of the commissioned personnel of the Army.

He was charged with overseeing the restoration of railroads and water to the city, and chaired a food relief committee that provided 24,000 rations daily by April 24.

[15] Sultan was awarded an oak leaf cluster to his Distinguished Service Medal for his work in Nicaragua, particularly for his response to the earthquake.

He was made a colonel on October 1, 1935, and vice-chairman of committee that arranged the inauguration of President Franklin D. Roosevelt in January 1937.

[17] As deputy commander stationed in Allied-controlled New Delhi, Sultan focused largely on logistical issues, ensuring that sufficient supplies arrived in China, particularly by airlifting goods over the Himalayas and constructing the Ledo Road.

In 1944, the Allies formulated a plan, known as Operation Capital, to retake Northern Burma and reopen a land route to China.

Sultan's troops traveled south during the Burma campaign, from Myitkyina, forcing the Japanese Thirty-Third Army back.

[20][21] For his service as commander, he was awarded a third oak leaf cluster, the Bronze Star Medal, and the Legion of Merit.

Sultan died from an acute heart ailment on January 14, 1947, at the Walter Reed General Hospital in Washington, D.C., while on active duty.

[23] Sultan was awarded his fourth oak leaf cluster to the Distinguished Service Medal as inspector general, the first army officer to do so.

[3][17] The United States Navy transport ship USNS General Daniel I. Sultan (T-AP-120) was named in his honor.