This study is a historical analysis of Union joint operations that occurred during the American Civil War in northeastern North Carolina. The study begins with a historical overview of joint operations then transitions into the events that occurred in northeastern North Carolina between February 1862 and June 1865. Joint operations in the sounds began with the assault of Roanoke Island in February 1862. This study documents the Roanoke Island operation and the missions that supported the capture of New Bern, Plymouth and Washington, North Carolina during 1862. Specific emphasis is placed on the difficulties encountered conducting joint riverine warfare in the restricted waters of North Carolina without the benefit of a unified commander. Although the concept of a unified commander was not utilized in the sounds of North Carolina, this study documents the maturation of the joint relationship that did exist. It further displays how the joint forces overcame the challenges of communications and both natural and manmade obstacles. Overall, this study shows how success in the waters of northeastern North Carolina was dependent on a joint effort but could have been more successful had a unified commander been appointed. Conclusions include present day application and considerations.