Doolittle Raid

As a first lieutenant, Emmens joined the Tokyo mission just before the mission. he was a co-pilot on one of the 16 B-25 Mitchell bombers under the command of Colonel James H. Doolittle that were left the carrier USS Hornet (CV-8) to carry out the Tokyo raid on April 18, 1942. Emmens' B-25 was Serial 40-2242 and was the eighth one to take off.

All of those 16 crews except Lieutenant Emmens' either crashed on the China coast or bailed out. His B-25 was consuming fuel at a much higher rate than planned on the mission, possibly due to incorrect engine carburetor settings. As a result, after attacking the target successfully in Japan, the plane turned north and touched down in a large field 40 miles (64 km) north of Vladivostok in the Soviet Union. Doolittle had specifically told the Raiders not to fly to Russia.

Internment and escape

The Soviet Union, which was not then at war with Japan, held the crewmen captive for 13 months. Colonel Emmens later wrote a book about his experience as a captive, "Guests of the Kremlin." After landing in Vladivostok, Emmens wrote that the Soviets held its five crewmen in several locations in the Soviet Union. Limited to the same diet as the besieged Soviet people, mostly black bread and cabbage, the five crew members suffered malnutrition, dysentery and other medical problems.

Rather than wait until the end of the war under deplorable conditions, the crew resolved to escape. While held in Ashkhabad, near the Persian border–thousands of miles from Vladivostok–they found a sympathetic Soviet officer. The man introduced them to an Afghani smuggler who supplied the officers with better food and other black market items. Crewmen paid the smuggler $250–won in a poker game the night before the mission by the pilot, Edward J. York, to lead them to a British embassy in Iran. The five, with the help of British diplomats in Mashhad, made their way to India and got a flight to the United States.

The B-25 aircraft was kept by the Soviets, and was scrapped in the 1950s.

Post war

After his return to the United States, Emmens attended and graduated from the Army Command and Staff School in Fort Leavenworth. He was then assigned as commander of the 494th Bomb Squadron at Lakeland, Florida, from July to August 1943, and then as the operations officer and then deputy commander of the 334th Bomb Group at Greenville Army Air Base, from August 1943 to September 1944. He was Deputy Base Commander at Greenville AAB from September to December 1944, and then Military Attache and Air Attache to Romania from December 1944 to January 1948.

Emmens then served at Headquarters United States Air Force at the Pentagon from April 1948 to July 1950, when he was transferred to Salzburg, Austria, as an intelligence officer. He then served as an intelligence officer with Headquarters Tactical Air Command at Langley Air Force Base, from July 1953 to June 1955, followed by duty with the commander of the 342d Fighter Day Wing, the first host unit at Myrtle Beach Air Force Base, and later as vice-commander of the 354th Fighter-Day Wing, which replaced the 342d FDW as the base's permanent host unit. During his supervision, construction was performed at a rapid pace.

Emmens began training for duty as an Air Attache to Japan. He served as Air Attache to Japan from June 1958 to September 1961, and then served as commander of the Office of Special Investigations District 20 at McChord Air Force Base, from September 1961 to August 1963. Emmens retired from the Air Force on June 10, 1964.