Confederate States Navy in the context of Confederate States Armed Forces

The Confederate States Army (CSA), also called the Confederate army or the Southern army, was the military land force of the Confederate States of America (commonly referred to as the Confederacy) during the American Civil War (1861–1865), fighting against the United States forces to support the rebellion of the Southern states and uphold and expand the institution of slavery. On February 28, 1861, the Provisional Confederate Congress established a provisional volunteer army and gave control over military operations and authority for mustering state forces and volunteers to the newly chosen Confederate States president, Jefferson Davis (1808–1889). Davis was a graduate of the United States Military Academy, on the Hudson River at West Point, New York, and colonel of a volunteer regiment during the Mexican–American War (1846–1848). He had also been a United States senator from Mississippi and served as U.S. Secretary of War under 14th president Franklin Pierce. On March 1, 1861, on behalf of the new Confederate States government, Davis assumed control of the military situation at Charleston Harbor in Charleston, South Carolina, where South Carolina state militia had besieged the longtime Federal Fort Sumter in Charleston harbor, held by a small U.S. Army garrison under the command of Major Robert Anderson (1805–1871). By March 1861, the Provisional Congress of the Confederate States meeting in the temporary capital of Montgomery, Alabama, expanded the provisional military forces and established a more permanent regular Confederate States Army.

An accurate count of the total number of individuals who served in the Military forces of the Confederate States (Army, Navy and Marine Corps) is not possible due to incomplete and destroyed/burned Confederate records; and archives. Estimates of the number of Confederate soldiers, sailors and marines are between 750,000 and over 1,000,000 troops. This does not include an unknown number of black slaves who were pressed into performing various tasks for the army, such as the construction of fortifications and defenses or driving wagons. Since these figures include estimates of the total number of soldiers who served at any time during the war, they do not represent the size of the army at any given date. These numbers also do not include sailors/marines who served in the Confederate States Navy.

The Union navy is used to describe the United States Navy (USN) during the American Civil War, when it fought the Confederate States Navy (CSN). The term is sometimes used to describe vessels of war used on the rivers of the interior under the control of the Union army.

CSS Virginia was the first steam-powered ironclad warship built by the Confederate States Navy during the first year of the American Civil War. She was constructed as a casemate ironclad using the razéed (cut down) original lower hull and engines of the scuttled steam frigate USS Merrimack. Virginia was one of the participants in the Battle of Hampton Roads, opposing the Union's USS Monitor in March 1862. The battle is chiefly significant in naval history as the first battle between ironclads.

The president of the Confederate States was the head of state and head of government of the unrecognized breakaway Confederate States. The president was the chief executive of the federal government and commander-in-chief of the Confederate Army and Navy.

Article II of the Constitution of the Confederate States vested executive power of the Confederacy in the president. The power included execution of law, along with responsibility for appointing executive, diplomatic, regulatory and judicial officers, and concluding treaties with foreign powers with the advice and consent of the senate. He was further empowered to grant reprieves and pardons, and convene and adjourn either or both houses of Congress under extraordinary circumstances.

CSS Shenandoah, formerly Sea King and later El Majidi, was an iron-framed, teak-planked, full-rigged sailing ship with auxiliary steam power chiefly known for her actions under Lieutenant Commander James Waddell as part of the Confederate States Navy during the American Civil War.

Shenandoah was originally a British merchant ship launched as Sea King on August 17, 1863, but was later repurposed as one of the most feared commerce raiders in the Confederate Navy. For twelve-and-a-half months from 1864 to 1865, she undertook commerce raiding around the world in an effort to disrupt the Union's economy, capturing and sinking or bonding 38 merchant vessels, mostly whaling ships from New Bedford, Massachusetts. She finally surrendered on the River Mersey, Liverpool, United Kingdom, on November 6, 1865, six months after the war had ended.

USS United States was a wooden-hulled, three-masted heavy frigate of the United States Navy and the first of the six original frigates authorized for construction by the Naval Act of 1794. The name "United States" was among ten names submitted to President George Washington by Secretary of War Timothy Pickering in March 1795 for the frigates that were to be constructed. Joshua Humphreys designed the frigates to be the young Navy's capital ships, and so United States and her sisters were larger and more heavily armed and built than typical frigates of the period. She was built at Humphrey's shipyard in Philadelphia, Pennsylvania and launched on 10 May 1797 and immediately began duties with the newly formed United States Navy protecting American merchant shipping during the Quasi-War with France.

In 1861, United States was in port at Norfolk when she was seized by the Virginia Navy. She was commissioned into the Confederate navy as CSS United States, but was later scuttled by Confederate forces. The U.S. Navy raised United States after retaking Norfolk, Virginia, but the aged and damaged ship was not returned to service; instead, United States was held at the Norfolk Navy Yard until she was broken up in December 1865.