4th Regiment

4th Regiment may refer to:

Philippine Commonwealth

4th Infantry Regiment (Philippine Commonwealth Army)
4th Infantry Regiment (Philippine Constabulary) - The military establishment of the 4th Infantry Regiment of the Philippine Constabulary was active on 1935 to 1942 and 1944 to 1946 under the U.S. military command and they stationed in Southern Luzon, Mindoro and Palawan.

Poland

4th Regiment of Front Guard, Polish-Lithuanian Commonwealth unit formed in 1733

United States

United Kingdom

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