My father was an army officer. He worked in the supplies and procurement side of support sending out tenders and awarding contracts. Initally, especially when he served overseas, until people knew him, he was offered all sorts of things from straight forward cash, to tickets for events, and, when one contractor discovered my mother loved flowers, a beautiful basket of flowers arrived at our home. My father allowed my mother to have a photograph of them, then they went straight back to the contractor.
He never ever accepted any freeby from anyone, and it soon became known, and respected, even by those who had been able to 'buy' contracts from other officers in his job.
My father's standard is my standard for the conduct of anyone in public life.