First
1st Battalion, 1st Marines
1st Cavalry
1st Reconnaissance Battalion
1st Operations Group
1st Regiment
1st Mounted Division
1st Senate district
1st Division
1st Fighter Brigade
3rd Battalion, 1st Marines
Royal 1st Devon Yeomanry
1st Rifle Division
1st Armoured Infantry Brigade (United Kingdom)
1st Brigade Combat Team, 1st Cavalry Division (United States)
1st Pennsylvania Regiment
1st Word
1st Hussars
1st Reconnaissance Squadron
1st Theater Sustainment Command
1st Squadron, 1st Cavalry Regiment
1st Battalion, 4th Marines
2nd Battalion, 1st Marines
1st Brigade
1st Armored Division (United States)
1st Brigade Combat Team, 1st Infantry Division (United States)
1st Marine Regiment (United States)
1st & Ten
1st Brigade Combat Team
1945–46 Danish 1st Division
1951–52 Danish 1st Division
1st Michigan Infantry Regiment
1st Artillery Regiment
1st Distribution Support Battalion
1955–56 Danish 1st Division
1949–50 Danish 1st Division
1948–49 Danish 1st Division
1946–47 Danish 1st Division
1st Airborne
1st Engineer Regiment (Italy)
1st Marine Division
1947–48 Danish 1st Division
1st Constitution Bancorp
1950–51 Danish 1st Division
1st Bombardment Wing
1952–53 Danish 1st Division
1st Air Defense Artillery Regiment
1954–55 Danish 1st Division
1953–54 Danish 1st Division
1st Minnesota Infantry Regiment
1st Missouri Infantry
1st Armoured Brigade (United Kingdom)
1st (UK) Division
1st Battle Squadron
1st Airborne Command Control Squadron
1st Division (Thailand)
1st Brigade (Australia)
1st Belorussian Front
1st Delaware Infantry Regiment
1st (African) Division
1st Horse (Skinner's Horse)
1st Armored
1st Division (Australia)
1st Combat Engineer Battalion
1st Infantry Division (United States)
1st Canadian Parliament
1st Expeditionary Rescue Group
1st Colorado Infantry Regiment
1st Fighter Squadron
1st Infantry Regiment (United States)
1st Royal New South Wales Lancers
1st millennium BC
Ōita 1st district
1st Georgia Infantry Regiment
1st Cavalry Division (United States)
Francis Cook, 1st Viscount of Monserrate
1st Test and Evaluation Squadron
1st Armored Division (France)
1956–57 Danish 1st Division
1st Source
1st Light Car Patrol (Australia)
1st Fighter Wing
1st Marine Expeditionary Brigade (United States)
1st Cavalry Regiment (United States)
1st Brahmans
1st Foreign Regiment (France)
1st Anti-Aircraft Brigade
1st Pontieri Regiment
1st (Peshawar) Division
1st Maryland Cavalry Regiment
1st Low Altitude Air Defense Battalion
1st Provisional Marine Brigade
1st Parachute Division (Germany)
1st Wisconsin Infantry Regiment
1st Earl of Suffolk
1st Air Cavalry Brigade
1st Civil Affairs Group
1st Special Operations Squadron
1st Battalion, 5th Marines
1st Marine Logistics Group
1st Canadian Division
1st Airlanding Brigade (United Kingdom)
1st Earl Temple
1958 Danish 1st Division
2003–04 Danish 1st Division
2002–03 Danish 1st Division
1960 Danish 1st Division
1st Ski Division (Wehrmacht)
1st Armoured Division (Australia)
1st Health Battalion (Australia)
Komandarm 1st rank
1959 Danish 1st Division
Captain 1st rank
1st Marine Aircraft Wing
1st Maryland Cavalry Battalion, Potomac Home Brigade
2000–01 Danish 1st Division
1st Time
1st Strategic Aerospace Division
2001–02 Danish 1st Division
1st GAM: Amai Yuwaku
1999–2000 Danish 1st Division
1997–98 Danish 1st Division
1st Aviation Regiment (United States)
1996–97 Danish 1st Division
1st Photographic Group
1st Viscount Hampden
1st Helicopter Squadron
1st Force Reconnaissance Company
1st Missouri Cavalry Regiment (Union)
1st Guards Brigade (Croatia)
1st Army Corps
1995–96 Danish 1st Division
1st Armored Brigade (People's Republic of China)
1st Infantry Regiment (Lithuania)
1st Air Fleet
1st Brigade (New Zealand)
1st Commonwealth Division
1st Tactical Missile Squadron
2004–05 Danish 1st Division
1st Battalion, 227th Aviation Regiment (United States)
1st Regiment, Royal Australian Artillery
1998–99 Danish 1st Division
1st Airlift Squadron
1st Australian Horse
2009–10 Danish 1st Division
1st Amphibious Mechanized Infantry Division
1st Battalion (Australia)
1st Panzergrenadier Brigade (Germany)
Interzone: The 1st Anthology
1st South African Infantry Division
Active Privy Councillor, 1st class
1st West Virginia Infantry Regiment
1st Battalion (Ontario Regiment), CEF
1st Central Committee of the Workers' Party of North Korea
1st (Risalpur) Cavalry Brigade
1st district
1st The Royal Dragoons
1st of tha Month
1st Artillery Regiment "Cacciatori delle Alpi"
1st King's Dragoon Guards
William Somerville, 1st Baron Athlumney
James Remnant, 1st Baron Remnant
1st Corps (Yugoslav Partisans)
William Herbert, 1st Earl of Pembroke (died 1570)
1st Army (Italy)
1967 Danish 1st Division
1st Rhode Island Infantry Regiment
1st Central Committee
1st Special Operations Wing
1st Congress
1st Light Cruiser Squadron
Members of the 1st Dáil
1st Mountain Division
Government of the 1st Dáil
1st Guards Tank Army
1st Armoured Division (Poland)
2023–24 Danish 1st Division
Queen's York Rangers (1st American Regiment)
1st Tank Battalion
1st Special Forces Group (United States)
1st Battalion, 11th Marines
1st Army Corps (Soviet Union)
1st Gloucestershire Engineer Volunteer Corps
1st Regiment "Granatieri di Sardegna"
1st Mechanized Corps (Soviet Union)
1st Battalion, 7th Marines
1st Turkmenevo
William Douglas, 1st Duke of Queensberry
1st millennium
1st Tank Brigade (Ukraine)
167th (1st London) Brigade
Joseph Paton Maclay, 1st Baron Maclay
California's 1st senatorial district
1st Bersaglieri Regiment
2006–07 Danish 1st Division
1st String Teenage High
2021–22 Danish 1st Division
1st meridian
Deux-Sèvres's 1st constituency
Sir John Anderson, 1st Baronet