174th

The designation 174th is used for several distinct military units, a civic street, and a few other entities. Its most common references are found in the armed forces of the United States and the United Kingdom.

In the United States, the 174th Infantry Regiment of the Connecticut National Guard was organized in 1917 and served in the American Expeditionary Forces during World War I, later becoming part of the 43rd Infantry Division. A separate 174th Infantry Regiment exists in the Army Reserve, assigned to the 171st Stryker Brigade Combat Team, and has been deployed to Afghanistan and Iraq in the 21st century. The 174th Air Defense Battalion, a U.S. Army National Guard unit, is responsible for air defense operations in the Southwest region of the country. The United States Army also maintains the 174th Sustainment Brigade, which provides logistical support to front‑line units.

In the United Kingdom, the 174th Brigade was a formation of the British Army during World War I and later became part of the Territorial Army in the interwar years. The 174th (Home) Battalion, formed in the 19th century, was a part of the Volunteer Force and later the Territorial Force. The unit was relieved during the reorganisation of the Army in 1908.

Beyond the armed forces, 174th Street in Manhattan, New York City, runs north–south and is a major thoroughfare through Brooklyn and Queens, intersecting several subway lines and serving as a commercial corridor. The term also appears in local historical markers, business names, and in the titles of academic chapters covering 18th-century events.

The various uses of the number 174th reflect its role as a numerical identifier across different organizations, primarily military and civic. The designation is typically accompanied by additional information that specifies the unit, institution, or location, thereby distinguishing one 174th from another.