Charles Ivan Aller was born in July 1888 in Colorado. He was the son of Harry L. Aller and Elnora B. Aller. He served as a Chief Machinist's Mate in the US Navy aboard R38/ZR-2 during World War I.

CMM Aller was killed when the experimental dirigible R-38 broke up and exploded in England on it 4th and final test flight prior to being purchased by the U.S. Navy from the British who built the airship. The intentions were for America to utilize this ship during WWI and become the main means of transportation in the future. A total of 44 men lost there lives 17 were Americans. Witnesses said it appeared to break in the middle and the front half exploded, the tail end fell in the Humber River, Hull, England, there were 4 survivors pulled from it. One being the pilot.

Cause of Explosion: Zepplins fly on hydrogen and as a result of their highly flammable lifting gas, it exploded over the river with thousands of spectators on the shore watching this amazing aircraft take off. No one on the shore-side were injured.

CMM Aller is now buried in the Fort Rosecrans National Cemetery, San Diego, San Diego County, California, USA. His name is commemorated on a monument located at the Western Cemetery, Hull, England but his middle name's initial is inscribed as J.

Source of information: www.findagrave.com
Photo source: www.britishairshippeople.org.uk