After his tenure as governor, Warfield returned to his previous activities. He became president of the Fidelity Trust Company with Baltimore Sun Publisher Van Lear Black. He served on the board of the Montgomery Mutual Insurance Company until his death. In addition to retaining his presidency at the Fidelity and Deposit Company. He was a prominent member of the Maryland Club and also served as President of the Maryland Historical Society. Warfield was proud of his families Confederate legacy, representing Maryland in reunions and events like the 1911 Southern commercial congress in Atlanta.