2nd Regiment

• 2/21 Cretan Regiment
• 2/39 Evzone Regiment
• 2/6th Cavalry Commando Regiment (Australia)
• 2e régiment de chevau-légers lanciers de la Garde Impériale
• 2nd Air Defense Artillery Regiment
• 2nd Alabama Volunteer Infantry Regiment (African Descent)
• 2nd Albany County Militia Regiment
• 2nd Alpine Artillery Regiment
• 2nd Alpine Engineer Regiment
• 2nd Alpine Signal Regiment
• 2nd Alpini Regiment
• 2nd Armoured Regiment (Poland)
• 2nd Aviation Regiment (United States)
• 2nd Canadian Regiment
• 2nd Cavalry Regiment (Australia)
• 2nd Cavalry Regiment (United States)
• 2nd Connecticut Regiment
• 2nd East Anglian Regiment
• 2nd Field Artillery Regiment (United States)
• 2nd Field Artillery Regiment/Field Artillery Battery ParaCommando
• 2nd Field Regiment, Royal Canadian Artillery
• 2nd Foreign Engineer Regiment
• 2nd Foreign Infantry Regiment
• 2nd Foreign Parachute Regiment
• 2nd Georgia Regiment
• 2nd Guards Field Artillery
• 2nd Infantry (2nd Palmetto Regiment)
• 2nd Infantry Regiment (South Korea)
• 2nd Infantry Regiment (United States)
• 2nd Iowa Regiment
• 2nd Kentucky Infantry
• 2nd Lancers Regiment (Portugal)
• 2nd Maine Volunteer Infantry Regiment
• 2nd Marine Infantry Parachute Regiment
• 2nd Marine Regiment (United States)
• 2nd Maryland Infantry
• 2nd Maryland Regiment
• 2nd Massachusetts Regiment
• 2nd Michigan Volunteer Cavalry Regiment
• 2nd Michigan Volunteer Infantry Regiment
• 2nd Minnesota Volunteer Cavalry Regiment
• 2nd Nebraska Cavalry
• 2nd New Hampshire Regiment
• 2nd New Hampshire Volunteer Regiment
• 2nd New Jersey Regiment
• 2nd New York Regiment
• 2nd New York Volunteer Infantry Regiment
• 2nd North Carolina Regiment
• 2nd Ohio Infantry
• 2nd Oregon Volunteer Infantry Regiment
• 2nd Pennsylvania Regiment
• 2nd Punjab Regiment
• 2nd Queen Victoria's Own Rajput Light Infantry
• 2nd Regiment Alabama Volunteer Cavalry (Confederate)
• 2nd Regiment Illinois Volunteer Cavalry
• 2nd Regiment Indiana Cavalry
• 2nd Regiment Iowa Volunteer Cavalry
• 2nd Regiment Kansas Volunteer Infantry (African Descent)
• 2nd Regiment Massachusetts Volunteer Heavy Artillery
• 2nd Regiment Massachusetts Volunteer Infantry
• 2nd Regiment South Carolina Volunteer Infantry (African Descent)
• 2nd Regiment Wisconsin Volunteer Cavalry
• 2nd Regiment of Cavalry, Massachusetts Volunteers
• 2nd Rhode Island Regiment
• 2nd Royal Tank Regiment
• 2nd Serres Regiment
• 2nd South Carolina Regiment
• 2nd Tangier Regiment
• 2nd Training Aviation Regiment
• 2nd United States Infantry Regiment (Civil War)
• 2nd United States Volunteer Sharpshooter Regiment
• 2nd Virginia Infantry
• 2nd Virginia Regiment
• 2nd Virginia Volunteer Infantry (1898)
• 2nd West Virginia Veteran Volunteer Infantry Regiment
• 2nd West Virginia Volunteer Cavalry Regiment
• 2nd West Virginia Volunteer Infantry Regiment
• 2nd Wisconsin Volunteer Infantry Regiment
• 2nd Yugoslav Assault Regiment
• 2nd/10th Medium Regiment, Royal Australian Artillery
• 2nd/14th Light Horse Regiment
• 2nd/4th Lancers Regiment
• 2nd/4th Regiment Mounted Rifles
• 64th (2nd Staffordshire) Regiment of Foot
• 65th (2nd Yorkshire, North Riding) Regiment of Foot
• Kingdom of Holland
• Nevers' 2nd Regiment Band
• Polish 2nd Legions' Infantry Regiment