Born in Pennsylvania,[1][2] Gene Dewey was educated at the United States Military Academy, graduating with a B.S.
He was then posted briefly at Fort Benning, before being part of the first ever deployment of an Army Aviation company overseas, flying over 1000 hours in Southeast Asia during the Vietnam War and earning three Air Medals.
In 1968, Dewey was named one of the White House Fellows and spent a year as Assistant to the Administrator of the United States Agency for International Development.
In this capacity, he played a major role in coordinating United States civilian relief efforts during the Nigerian Civil War, developing the Cross River proposal for delivering humanitarian aide into the Biafra region.
He received the Distinguished Flying Cross and six more Air Medals for commanding the helicopter gun trips during the prisoner rescue efforts in Cambodia.
Dewey retired from the army as a colonel in 1981, accepting a civilian position at Deputy Assistant Secretary of State in the Bureau for Refugee Programs.