4th Brigade

• 4 Canadian Mechanized Brigade Group
• 4th Airmobile Brigade (France)
• 4th Armoured Brigade (Australia)
• 4th Armoured Brigade (United Kingdom)
• 4th Brigade (Australia)
• 4th Brigade Combat Team, 10th Mountain Division (United States)
• 4th Brigade Combat Team, 2nd Infantry Division (United States)
• 4th Brigade Royal Field Artillery
• 4th Brigade, 104th Division (United States)
• 4th Brigade, 1st Armored Division (United States)
• 4th Brigade, 1st Cavalry Division (United States)
• 4th Brigade, 1st Infantry Division (United States)
• 4th Canadian Armoured Brigade
• 4th Canadian Infantry Brigade
• 4th Cavalry Brigade (Imperial Japanese Army)
• 4th Cavalry Brigade (Poland)
• 4th Cavalry Brigade (United Kingdom)
• 4th Cavalry Brigade (United States)
• 4th Engineer Brigade (Romania)
• 4th Guards Brigade (Croatia)
• 4th Guards Brigade (United Kingdom)
• 4th Infantry Brigade (Canada)
• 4th Infantry Brigade (Lebanon)
• 4th Infantry Brigade (South Africa)
• 4th Infantry Brigade (United Kingdom)
• 4th Light Horse Brigade
• 4th London Infantry Brigade
• 4th Mechanized Brigade (United Kingdom)
• 4th Mounted Brigade (United Kingdom)
• 4th Parachute Brigade (Argentina)
• 4th Parachute Brigade (United Kingdom)
• 4th Rapid Deployment Brigade (Czech Republic)
• 4th SS Volunteer Panzergrenadier Brigade Netherlands
• 4th Special Service Brigade
• 4th Sustainment Brigade
• IV Brigade, Royal Horse Artillery
• IV Brigade, Royal Horse Artillery (T.F.)