He served in the U.S. Army during World War I. Dwight and Mabel's children were Gloria and Nancy—they attended Springfield High School in LaPorte County.

[3][4] Green attended Wabash College in Crawfordsville, Indiana, where he was a member of the Alpha-Pi chapter of Kappa Sigma fraternity.

The government team prosecuting Al Capone for Tax Evasion consisted of U.S. Attorney George E. Q. Johnson, and his prosecutors Dwight H. Green, Samuel Clawson, Jacob Grossman and William Froelich.

At the end of the same year, Pearl Harbor thrust Governor Green into the job of leading one of the largest U.S. state governments during World War II.

The Chicago Democratic party slated an intellectual lawyer, Adlai Stevenson, to oppose Green for a third term in office.