Frank Lautenberg, the last World War II veteran to serve in the U.S. Senate, was buried Friday with military honors in a rain-drenched ceremony at Arlington National Cemetery.

Frank Lautenburg laid to rest at Arlington National Cemetary (YouTube)

The Democrat from New Jersey served in the Army Signal Corps during the war. He spent nearly three decades in the Senate and was its oldest member when he died Monday at 89, after suffering complications from viral pneumonia.

Lautenberg was buried on a hillside near the gravesite of President John F. Kennedy. A bugler played "Taps" and soldiers fired three rifle volleys in his honor.

Among the mourners were fellow New Jersey Senator Robert Menendez plus Tom Harkin from Iowa and Veterans Affairs Secretary Eric Shinseki according to the Star Ledger.

Lautenberg's grave is near that of former Secretary of Defense Robert McNamara and the four Kennedy brothers.

Lautenberg amassed a fortune as a founder of a payroll company. He ran for the Senate in 1982, spending $3 million of his own money to beat Republican Rep. Millicent Fenwick in an upset.

Climbing the Senate seniority ladder, Lautenberg was a strong advocate on issues such as gun control, environmental protections and transportation. He wrote the laws banning smoking on domestic airline flights and setting the national minimum drinking age of 21.

Health problems had forced Lautenberg to miss many votes this year. In April, he returned to the chamber in a wheelchair for votes on gun legislation.

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