In military terms, 1st Regiment or 1st Infantry Regiment may refer to:

Australia

1st Regiment, Royal Australian Artillery The 1st Regiment, Royal Australian Artillery is a close support regiment attached to the 7th Brigade at Enoggera Barracks in Queensland. The unit was formed in 1914 under the name 1st Australian Field Artillery Brigade, part of 1st Division Arti ...

1st Aviation Regiment (Australia) The 1st Aviation Regiment is one of the Australian Army's three Army Aviation regiments and provides aerial reconnaissance and fire support to the Australian Army. The 1st Aviation Regiment, equipped with Eurocopter Tiger attack helicopters, ...

France

1st Marine Infantry Regiment The 1st Marine Infantry Regiment (french: 1er Régiment d'Infanterie de Marine, 1er RIMa) is a French regiment heir of the colonial infantry. The regiment is one of the « quatre vieux » regiments of the Troupes de Marine, with the 2nd Marine ...

1st Infantry Regiment (France) , image=Insigne du 1er régiment d'infanterie (1er RI).svg , image_size=150px , caption=Insignia of the 1st Infantry Regiment. , dates=1479 – present , country=France , branch=Army , command_structure= Franco-German Brigade part of 1st Divisi ...

Germany

* Jäger Regiment 1 (Bundeswehr) *

1st Foot Guards (German Empire) The 1st Foot Guard Regiment (german: 1. Garde-Regiment zu Fuß) was an infantry regiment of the Royal Prussian Army formed in 1806 after Napoleon defeated Prussia in the Battle of Jena–Auerstedt. It was formed by combining all previous Foot ...

1st (Emperor Alexander) Guards Grenadiers The 1st (Emperor Alexander) Guards Grenadiers (german: Kaiser Alexander Garde-Grenadier-Regiment Nr. 1, briefly ''Alexander-Regiment'' or ''Alexandriner'') were an infantry regiment of the Guard Corps within the Royal Prussian Army and a Guards G ...

* 1st (1st East Prussian) Grenadiers "Crown Prince" *

SS Fortress Regiment 1 SS Fortress Regiment 1 (german: SS-Festungs-Regiment 1) was an improvised unit of the Waffen SS formed in February 1945, during World War II, for service in the defence of the German city of Breslau, during the Red Army's Siege of Breslau. Th ...

Greece

1st Infantry Regiment (Greece) The 1st Infantry Regiment "Sangarios" ( el, 1ο Σύνταγμα Πεζικού «ΣΑΓΓΑΡΙΟΣ», 1ο ΣΠ) is a motorized infantry regiment of the Hellenic Army. Established in 1885 at Athens, it fought in all conflicts in which Greece part ...

* 1st Evzone Regiment *

1st Raider Regiment (Greece) First or 1st is the ordinal form of the number one (#1). First or 1st may also refer to: *World record, specifically the first instance of a particular achievement Arts and media Music * 1$T, American rapper, singer-songwriter, DJ, and rec ...

, see 3rd Special Forces Division * 1st Serres Regiment

Poland

* 1st Aviation Regiment (Poland)

Spain

* 1st King's Immemorial Infantry Regiment

South Africa

Durban Light Infantry The Durban Light Infantry is a Motorised Infantry regiment of the South African Army. It lost its status as a Mechanised infantry regiment in 2010 in line with the rationalisation of resources. As a reserve unit, it has a status roughly equival ...

, formerly 1st Infantry (Durban Light Infantry)

Thailand

* 1st Infantry Regiment, King's Own Bodyguards

United Kingdom

* 1st (Royal) Regiment of Foot *

1st Regiment of Foot Guards "Shamed be whoever thinks ill of it." , colors = , colors_label = , march = Slow: " Scipio" , mascot = , equipment = , equipment ...

1st Regiment Greek Light Infantry The 1st Regiment Greek Light Infantry (1810–12) was a light infantry regiment, founded as a ''local establishment'' in United Kingdom of Great Britain and Ireland, British service consisting mostly of Greek and Albanian enlisted men and Greek and ...

1 Regiment RLC 1 Regiment RLC is a regiment of the British Army's Royal Logistic Corps. History The regiment was formed in 1812 and has participated in many conflicts such the Second World War and operations in Northern Ireland, Iraq and Afghanistan. After being ...

, a unit of the Royal Logistic Corps *

1 Regiment Army Air Corps 1 Regiment Army Air Corps is a regiment of the Army Air Corps (AAC). History * Detmold , 9, 17 & 26 Flights , 1964-1969 * Detmold , 651, 657 & 658 Squadrons , 1969-1971 * HQ at Detmold , 651 at Verden, 657 at Soltau & 658 Squadron at Min ...

United States

1st Infantry Regiment (United States) :''This article deals with the history of the current 1st Infantry Regiment of the United States Army. For the history of an earlier 1st Infantry Regiment, see 3rd US Infantry'' The 1st Infantry Regiment is a regiment of the United States Army ...

1st Marine Regiment (United States) The 1st Marine Regiment is an infantry regiment of the United States Marine Corps based at Marine Corps Base Camp Pendleton, California. The regiment is under the command of the 1st Marine Division and the I Marine Expeditionary Force. The 1st ...

First Regiment Massachusetts Volunteer Infantry The 1st Regiment Massachusetts Volunteer Infantry was an infantry regiment in the Union army during the American Civil War. It was the first regiment to leave Massachusetts for a three-year term (several had previously left for 90-day terms) in ...

, a unit in the American Civil War *

1st Aviation Regiment (United States) The 1st Aviation Regiment is a task force and is a unit in the First Infantry Division's Combat Aviation Brigade, composed of three battalion units of pilots, crews, and teams within the United States Army. Structure * 1st Battalion (Attack Re ...

Yugoslavia

* 1st Fighter Regiment * 1st Yugoslav Fighter Regiment *

1st Transport Aviation Regiment First or 1st is the ordinal form of the number one (#1). First or 1st may also refer to: *World record A world record is usually the best global and most important performance that is ever recorded and officially verified in a specific skill, ...

* 1st Training Aviation Regiment * 1st Air Reconnaissance Regiment