The sixteen battleships of the Great White Fleet, led by USS Connecticut, return to the United States after a voyage around the world.

The Great White Fleet was the popular nickname for the group of United States Navy battleships which completed a journey around the globe from December 16, 1907 to February 22, 1909 by order of President Theodore Roosevelt. Its mission was to make friendly courtesy visits to numerous countries while displaying new U.S. naval power to the world. One goal was to deter a threatened war with Japan since tensions were high in 1907. It familiarized the 14,500 officers and men with the logistical and planning needs for extended fleet action far from home. Hulls were painted a stark white, giving the armada its nickname. It consisted of 16 battleships divided into two squadrons, along with various small escorts. Roosevelt sought to demonstrate growing American military power and blue-water navy capability. After long neglecting the Navy, Congress started generous appropriations in the late 1880s. Beginning with just 90 small ships, over one-third of them wooden and obsolete, the navy quickly added new steel fighting vessels. The fleet's capital ships were already obsolete compared to the British dreadnoughts in 1907. Nevertheless, it was by far the largest and most powerful fleet that had ever circled the globe. The mission was a success at home and in every country it visited, as well as Europe (which was visited only briefly).

A battleship is a large armored warship with a main battery consisting of large caliber guns. It dominated naval warfare in the late 19th and early 20th centuries.

The term battleship came into use in the late 1880s to describe a type of ironclad warship, now referred to by historians as pre-dreadnought battleships. In 1906, the commissioning of HMS Dreadnought into the United Kingdom's Royal Navy heralded a revolution in the field of battleship design. Subsequent battleship designs, influenced by HMS Dreadnought, were referred to as "dreadnoughts", though the term eventually became obsolete as dreadnoughts became the only type of battleship in common use.

Battleships were a symbol of naval dominance and national might, and for decades the battleship was a major factor in both diplomacy and military strategy. A global arms race in battleship construction began in Europe in the 1890s and culminated at the decisive Battle of Tsushima in 1905, the outcome of which significantly influenced the design of HMS Dreadnought. The launch of Dreadnought in 1906 commenced a new naval arms race. Three major fleet actions between steel battleships took place: the long-range gunnery duel at the Battle of the Yellow Sea in 1904, the decisive Battle of Tsushima in 1905 (both during the Russo-Japanese War) and the inconclusive Battle of Jutland in 1916, during the First World War. Jutland was the largest naval battle and the only full-scale clash of dreadnoughts of the war, and it was the last major battle in naval history fought primarily by battleships.The Naval Treaties of the 1920s and 1930s limited the number of battleships, though technical innovation in battleship design continued. Both the Allied and Axis powers built battleships during World War II, though the increasing importance of the aircraft carrier meant that the battleship played a less important role than had been expected in that conflict.

The value of the battleship has been questioned, even during their heyday. There were few of the decisive fleet battles that battleship proponents expected and used to justify the vast resources spent on building battlefleets. Even in spite of their huge firepower and protection, battleships were increasingly vulnerable to much smaller and relatively inexpensive weapons: initially the torpedo and the naval mine, and later aircraft and the guided missile. The growing range of naval engagements led to the aircraft carrier replacing the battleship as the leading capital ship during World War II, with the last battleship to be launched being HMS Vanguard in 1944. Four battleships were retained by the United States Navy until the end of the Cold War for fire support purposes and were last used in combat during the Gulf War in 1991. The last battleships were struck from the U.S. Naval Vessel Register in the 2000s. Many World War II-era battleships remain in use today as museum ships.