 He served in this position until 1985, all the while in 1982, he was promoted to the rank of Major and in 1983, he attended the United States Army Command and General Staff College in Fort Leavenworth, Kansas.During the years that he served in the Commissioners Office, the Puerto Rico National Guard named Díaz Colón Battalion Commander of the 130th Engineer Battalion.From 1985 to 1990, Díaz-Colón was given a Federal position when he was placed in charge of the Housing Urban Development (HUD) in the Caribbean.