The second volume on the Atlantic Coast campaign details the Union Navy's expanding blockade and key amphibious operations following the initial seizure of coastal forts. The focus shifts to securing strategic harbors like Charleston, which was heavily defended, and the logistical challenges of maintaining a near-impenetrable blockade. It highlights the ingenuity and sacrifice of Union sailors as they systematically strangled the Confederacy's overseas trade. This naval strategy proved critical in isolating the South and sealing off its vital economic lifeline, ensuring ultimate Union dominance.