 Gen. Filip Aglacow, completed its relocation to airfields in the area of Myślibórz, but only the 2nd Ground-Attack Division and the 3rd Fighter Division because the 1st Bomb Division was still training in central Poland.Those two units increased the strength of the main group of the Polish Air Force almost four times up to four fighter regiments, four ground-attack regiments and one bomber regiment.On the first day only fighters from the 3rd Division took part in the battle covering units crossing the Hohenzollern Canal near Hennigsdorf during 41 combat flights.