Lee brought Commodore Tattnall from a James River command, where under imminent attack from Union monitors he had landed sailors to expand Richmond fortifications immediately after the Battle of Hampton Roads. Tattnall then manned batteries with his gunners to repel monitor attacks threatening to bombard Richmond's Tredegar Iron Works. Tattnall's sailors would perform similar service at a battery across from Savannah's Fort Jackson. Turning his attention to Fort Pulaski's defenses, Lee anticipated Union moves to establish batteries above the Fort. He ordered guns positioned to cover their likely positions were the Federals to get behind Pulaski in a siege attempt.