A regiment is a military unit. Its role and size varies markedly, depending on the country, service, or specialisation.
The 15th United States Infantry Regiment is a parent regiment in the United States Army. It has a lineage tracing back to the American Civil War, having participated in many battles.
The Structure of the Argentine Army follows below. As of 2020 the active force of the Argentine Army includes a total of eleven brigades:
The Marine Infantry is the naval infantry branch of the Spanish Navy responsible for conducting amphibious warfare. Fully integrated into the Spanish Navy's structure, the branch's history dates back to 1537 when Charles V, Holy Roman Emperor formed the Compañías Viejas del Mar de Nápoles, making it the oldest marine unit in existence.
The Mexican Army is the combined land and air branch and is the largest part of the Mexican Armed Forces; it is also known as the National Defense Army.
The Infantry Regiment "Asturias" No. 31 is a mechanized infantry unit in the Spanish Army.
The Sri Lanka Light Infantry (SLLI) is the oldest regiment in the Sri Lanka Army and the oldest infantry regiment in the army. It is made up of sixteen regular battalions and nine volunteer battalions, and is headquartered at the Panagoda Cantonment, Panagoda.
The Canary Islands are an autonomous community of Spain. The headquarters of the Canary Islands military command is located in Santa Cruz de Tenerife, in the Palacio de la Capitanía General de Canarias. The following components of the Spanish Armed Forces are based in the Canary Islands:
The 1st Infantry Regiment "Los Patricios" is the oldest and one of the most prestigious regiments of the Argentine Army. The title is often shortened to the Patricians' Regiment. Since the 1990s the regiment has been designated as air assault infantry. It is also the custodian of the Buenos Aires Cabildo, the welcoming party for visiting foreign dignitaries to Argentina and the escort, and honor guard battalion for the City Government of Buenos Aires. Since 22 September 2010, the Regiment's headquarters building has been a National Historical Monument following a declaration by the Argentine government on the occasion of the country's bicentennial year.
The Infantry Regiment "Inmemorial del Rey" No. 1 is the senior regiment of the Spanish Army, and is considered the oldest still active military unit in the world.
This is an order of battle of the Chilean Army.
The Infantry Regiment "Saboya" No. 6 is a infantry unit of the Spanish Army, whose origins date back to 1633.
The 296th Infantry Regiment was an infantry regiment of the Puerto Rico Army National Guard consisting mostly of Puerto Rican enlisted soldiers and officers. Today, only its 1st Battalion remains active; being allotted to the 92nd Military Police Brigade of the Puerto Rico Army National Guard. The 296th is composed by the first battalion of infantrymen that engaged in combat as a Puerto Rico National Guard unit, as the 65th Infantry Regiment was, at the time, a regular Army unit. It is one of several National Guard units with colonial roots.
The 295th Infantry Regiment was a light infantry regiment of the Puerto Rico Army National Guard consisting mostly of Puerto Rican enlisted soldiers and officers. The regiment was the first regiment of any kind assigned to the Puerto Rico National Guard back when it was known locally as the 1st Infantry Regiment.
For more than a century the Military Parade of Chile or Great Military Parade of Chile has been a tradition within the Independence Day holidays in Chile. It is held in Santiago, Chile's O'Higgins Park on September 19 yearly in honor of the Glories of the Chilean Army with a military parade involving not just the ground forces but by the rest of the Chilean Armed Forces: the Chilean Navy, the Chilean Air Force, and the Carabineros de Chile. It is also in honor of the anniversary of the formal inauguration on that day in 1810 of the First Government Junta, which witnessed the first military parade of the independent nation at the Plaza de Armas, Santiago. It is the final act of the national independence celebrations, which are broadcast through TV and the Internet and radio.
The Tercio of Sicily is one of the tercios that were created by a 1534 decree of Charles V, Holy Roman Emperor. Since the 18th century, the Spanish army has maintained the tradition of this tercio in its regiments.
The Infantry Regiment "Soria" No. 9 is a light infantry regiment of the Spanish Army. Founded in 1509 as a tercio, it is one of the world's oldest still operational units. Today it is garrisoned on the Canary Islands and has fought in Afghanistan.
The 73rd Infantry Regiment of the Philippine Commonwealth Army was activated on August 25, 1941, was inducted to United States Army Forces in the Far East on September 1, 1941, by Captain Eugene B. Hicker of US Army. It was the last regiment among the three authorized to organized so it was not included when the entire 71st Infantry Division was ordered transferred to the main island of Luzon in September 1941.
