4th Legions' Infantry Regiment

Fourth Legions Infantry Regiment (Poland) (Polish: 4 Pulk Piechoty Legionow, 4 pp Leg.) was an infantry regiment of the Polish Legions in World War I (1915–1917) and the Polish Army in 1918–1939. During the interbellum period, it was garrisoned in the city of Kielce, and was part of the 2nd Legions Infantry Division.

The origins of the unit date back to the spring of 1915, when in Piotrków Trybunalski, the 4th Legions Infantry Regiment was formed by officers of the 2nd Brigade, Polish Legions, and a group volunteers, mostly from Austrian Galicia and Congress Poland. The regiment joined the 3rd Brigade, Polish Legions, and in July 1915 was sent to the Eastern Front, to fight against the Imperial Russian Army in the area of Lublin and in Volhynia.

The 4th Legions Infantry Regiment remained on the frontline until the autumn of 1916. Dissolved in November 1917 (see Oath crisis), its soldiers were either interned or sent to the Polish Auxiliary Corps.

On November 1, 1918 in Kraków, General brygady Bolesław Roja ordered Major Edward Szerauc, former commandant of the Third Legions Battalion, to re-create the 4th Legions Infantry Regiment. First regimental order was issued on the next day, and the new unit was formed out of Chrzanów Company of Captain Jazdzynski, together with Reserve Battalion of the 16th Austrian Rifle Regiment from Opava, Czech Silesia.

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