In military terms, 1st Brigade may refer to:
Australia edit
Belgium edit
Canada edit
Croatia edit
Czechoslovakia edit
Estonia edit
France edit
Germany edit
Israel edit
Japan edit
Poland edit
New Zealand edit
Romania edit
South Africa edit
Spain edit
Ukraine edit
United Kingdom edit
- 1st Artillery Brigade (United Kingdom)
- 1st Airlanding Brigade (United Kingdom)
- 1st Army Tank Brigade (United Kingdom)
- 1st Armoured Brigade (United Kingdom)
- 1st Armoured Infantry Brigade (United Kingdom)
- 1st Armoured Reconnaissance Brigade (United Kingdom)
- 1st Assault Brigade Royal Engineers
- 1st Cavalry Brigade (United Kingdom)
- 1st Composite Mounted Brigade
- 1st Gibraltar Brigade
- 1st Guards Brigade (United Kingdom)
- 1st London Infantry Brigade
- 1st Malaya Infantry Brigade
- 1st Mechanised Brigade (United Kingdom)
- 1st Motor Machine Gun Brigade
- 1st Mounted Brigade (United Kingdom)
- 1st Parachute Brigade (United Kingdom)
- 1st Special Service Brigade
- 1st Signal Brigade (United Kingdom)
Artillery units edit
United States edit
- 1st Air Cavalry Brigade, 1st Cavalry Division (United States)
- 1st Brigade, 1st Infantry Division (United States)
- 1st Brigade, 1st Cavalry Division (United States)
- 1st Brigade, 101st Airborne Division (United States), see 327th Infantry Regiment (United States)
- 1st Brigade Combat Team, 10th Mountain Division (United States)
- 1st Brigade, 7th Infantry Division (United States)
- 1st Brigade, 24th Infantry Division (United States)
- 1st Brigade, 104th Division (United States)
- 1st Marine Expeditionary Brigade (United States)
- 1st Provisional Marine Brigade
- 1st Sustainment Brigade (United States)