Prior to the start of World War II, the 4th Infantry Division was initially commanded by Colonel Tadeusz Lubicz-Niezabitowski, and its peacetime headquarters was located in
Toruń, with additional units stationed in
Włocławek and
Brodnica. After September 4, 1939, it was commanded by Colonel Mieczysław Rawicz-Mysłowski and then, after September 12, it was commanded by Colonel Józef Werobej. The 4th Division was originally part of the
Pomorze Army and stationed northeast of Toruń, near the border of
East Prussia. From September 9, the division fought against the
Wehrmacht in the
Battle of the Bzura, a Polish counterattack west of
Warsaw in the area of the
Bzura River.
1919–1921 The division was officially formed on April 16, 1919, in former
Austrian Galicia. Its first commandants were officers serving in the
Operation Group of General
Franciszek Aleksandrowicz: Major
Wlodzimierz Tyszkiewicz (chief of staff), General
Franciszek Kraliczek-Krajowski (divisional infantry) and Colonel
Adolf Engel (divisional artillery). At the beginning, the division consisted of three infantry regiments (14th, 18th and 37th), three artillery regiments (3rd field artillery, 11th field artillery and 2nd heavy artillery), and eight cavalry squadrons. All units concentrated in late April 1919 near
Sadowa Wisznia. Most of the division's soldiers had served in the
Austro-Hungarian Army in World War I. The division's formation was completed in early May, and by that time it had 7,162 infantry plus 807 cavalry soldiers. Furthermore, it had 108 machine guns, 24 cannons and three
armoured trains (Gromoboj, Kaniow and Odsiecz). Until late July 1919, the division fought in the
Polish–Ukrainian War in eastern Galicia. On July 27, it was sent to
Volhynia, and reinforced with 10th Infantry Regiment, transferred from Operational Group of Colonel
Władysław Sikorski. At that time, and until 1921, the division was divided into two infantry brigades (7th and 8th), and the 4th Artillery Brigade.
Polish–Ukrainian War On May 15, 1919, as part of Operational Group of General
Waclaw Iwaszkiewicz, the division entered the conflict. Its task was to break through Ukrainian lines in the area of
Mosciska –
Sambor. On May 17, it captured Sambor, on the next day
Drohobycz, and on May 20,
Stryj. On May 25, the division was rushed to
Stanisławów, preventing Ukrainian forces from capturing the city. At Stanisławów, the Poles seized Ukrainian cannons, guns, locomotives and stocks of food, ammunition and uniforms. In late May, 4th Division crossed the
Dniestr, and captured other towns, including
Podhajce and
Buczacz. In the area of
Pokucie, its elements made contact with
Romanian Army, which was allied with Poland, and which aided the Poles in the war against
West Ukrainian People's Republic. In early June 1919, after protests of Western Allies, the
Blue Army was withdrawn from Eastern Galicia, together with Operational Group of General
Daniel Konarzewski. As a result of this movement, Polish forces in the area were weakened, and on June 11, when Ukrainian Army began its counteroffensive, 4th Division retreated in panic, behind the
Gnila Lipa river, where it prepared defensive positions, together with
3rd Legions Infantry Division. On June 24 the Ukrainians broke through the positions of the 3rd Division, and Polish forces had to withdraw to the line of the Swirz river. After receiving reinforcements, the Poles began an offensive (June 28). The division was divided into two groups, and quickly advanced, reaching
Czortków and the
Zbrucz river by July 15. Next day, 4th Infantry Division was replaced with elements of 3rd and 10th Divisions.
Polish–Soviet War In the second half of July 1919, 4th Infantry Division was loaded on trains and transferred to
Brody, where it became part of Volhynian Front under General
Antoni Listowski. On August 8, it began an offensive, capturing
Krzemieniec and
Dubno in
Volhynia. The frontline then stalled along the
Horyn river until mid-November, when the
Red Army attacked, but without any significant success. Local clashes took place along the front until late April 1920, when
Polish General Staff ordered the destruction of Soviet
12th and
14th Armies, located in Volhynia and
Podolia. 4th Infantry Division was included in the newly created Polish 3rd Army, and ordered to destroy
Soviet 7th Rifle Division, and capture
Korosten. Four assault groups were formed, and on April 25 the division attacked. On the next day, at 10 pm, Korosten was seized. In May 1920, 4th Infantry Division was transferred by rail to
Minsk in
Belarus, and became part of Polish 4th Army. There, the division was reorganized and divided into three groups, commanded by
Władysław Anders,
Wladyslaw Tarwid and
Stanislaw Tessar. Their task was to push the enemy back behind the
Berezyna river. By June 5, the task was completed. Soviet offensive in Belarus began on July 4. The division was pushed back and retreated along the line
Nieswiez–
Baranowicze–
Slonim–
Wolkowysk–
Siedlce–
Góra Kalwaria, reaching the
Vistula on August 11. On the next day, it was incorporated into the 2nd Army, and defended the Vistula line near
Magnuszew. Following the
Battle of Dęblin and Minsk Mazowiecki, the division was transferred to the 5th Army under General Władysław Sikorski, and on August 17 entered
Zakroczym. By late August, the division cleared northern
Mazovia from Soviet elements. In early September 1920, 4th Infantry Division was transported back to Eastern Galicia, to the area of
Lwów, as reserve force of the 6th Army. On September 6, divisional 8th Brigade detrained near
Chodorow, and was immediately involved in fighting the enemy. At the same time, 7th Brigade fought
1st Cavalry Army near
Zolkiew. In mid-September, the division concentrated near
Przemyslany and advanced eastwards. On September 17, it captured Pomorzany, then
Zborow and
Troscianiec. Its advance was halted on September 20, near
Wisniowiec. In late September 1920, 4th Infantry Division was once again transported to the north, to
Grodno, and was incorporated into 2nd Army. By early October, it covered Polish–Lithuanian demarcation line near
Druskienniki. After Polish–Lithuanian truce was declared on October 5, the division was transferred to the rear, and in early November replaced by
2nd Legions Infantry Division Second Polish Republic On November 11, 1920, the division began its march from Druskienniki to Mazovia. Its headquarters was at first located in
Łomża, with 7th Brigade stationed in
Zambrów, and 8th Brigade in
Ostrołęka. The unit was then reorganized, with help from French officers. In April 1921, the headquarters with 14th Infantry Regiment and 7th Brigade were moved to
Włocławek. 8th Brigade with 10th Regiment were stationed in
Konin, and 37th Regiment in
Kutno. In November of that year, the division was reorganized: its 10th, 18th and 37th Infantry Regiments were transferred to the newly created
26th Infantry Division, garrisoned at
Skierniewice. The "new" 4th Infantry Division was transferred to
Toruń, and before the
Invasion of Poland it consisted of the following units: • Headquarters and staff (Toruń), •
14th Kujavian Infantry Regiment (
Włocławek), •
63th Toruń Infantry Regiment (Toruń), •
67th Greater Poland Infantry Regiment (
Brodnica), •
4th Kujawy Light Artillery Regiment (
Inowrocław). == 1939 Invasion of Poland ==