Mario C. Buonpane, Jr., a staunch local veterans’ activist, avid golfer and a family man, died on Monday after losing a vicious battle with prostate cancer. He was 83.

Buonpane, best known for his work with Huntington Town’s veterans — having served as a charter member and chairman of the Huntington Town Veterans Advisory Board and a past commander of the Northport American Legion Post 694 — is credited with spearheading the rehab of the Northport Veteran Administration Medical Center’s golf course, which brought golfers to the grounds and proceeds to the hospital, according to his son Mark Vincent (Buonpane).

“That’s his legacy,” Vincent said. “That will remain and serve the community for years and years to come.”

He received an honorable discharge from the U.S. Army and he joined the town’s veterans advisory board as a charter member in 1987. He became chairman in 1993, and since its inception, the group enhanced Veterans Plaza at Huntington Town Hall with the completion of a number of memorials honoring veterans of all wars fought by the U.S.

“Our Veterans Plaza is one of the finest on Long Island and we still have plans to improve it,” he wrote in a list of his accomplishments.

He was also the chairman of the legion’s Veterans Affairs Golf and Tournament Committee, through which he helped negotiate a contract to take over the golf course in 1996. When the group took over, the course hadn’t been mowed in five years, the greens were diseased and there were no facilities, according to Buonpane. Since then, the course touts a clubhouse with a deck, new fairways and more.

Buonpane was instrumental in getting the Northport American Legion’s Boys State and Girls State programs up and running. The programs select girls and boys off to participate in a model governments to teach them how they work, and under Buonpane’s leadership, the number of candidates the legion has sponsored has grown, from one in 1982 to about 20. The program, “teaches you how to be a good citizen,” Vincent said.

Aside from his many community contributions, Buonpane was, at heart, a family man, The father and husband, who worked for Grumman as an electrical engineer and designed electrical harnesses on the lunar module always had time for sports with the kids, Vincent said.

“He taught us great values, he taught us how to earn things the honest way, play by the rules, tell the truth and have great integrity,” Vincent said.

On his work at Grumman, Vincent said, “he contributed to the greatest journey humans had ever done.”

Buonpane’s dedication and never-give-up attitude was his trademark, the son said. He took up running in his 50s and could only run a few laps around the track but ultimately trained until he completed the New York City Marathon. He still went to the gym, even with stage 4 cancer.

“He was tough,” Vincent said. “He was a trooper.”

Others in the Huntington Town community were touched by Buonpane’s contributions, too. Supervisor Frank Petrone issued a statement on Buonpane’s death.

“He worked tirelessly to support efforts ensuring that we all remember, honor and respect our veterans and that veterans got the services and benefits they earned by serving our country,” he said. “We will miss his presence as the master of ceremonies at our wreath ceremonies and other veterans’ events.”

Joe Sledge, communications director at the Northport VA, also spoke highly of Buonpane’s contributions. Sledge said he had known Buonpane since he first started working the VA 23 years ago.

“It was he who sponsored my entry into the American Legion over 14 years ago,” he said. “He made many significant contributions to Northport VA Medical Center through his time, talent, and countless generous acts.  All who knew him would agree that Mario was a thoughtful, hard-working man whose life’s mission was to brighten the lives of others, especially hospitalized veterans. He will be sorely missed.”