St. Josaphat’s Church had strong national traditions, it was called the stronghold of Polish faith and patriotism, so it is not surprising that national themes were included in the decoration, mainly in two scenes painted above the arcades of the body near the chancel. A version of Jerzy Kossak’s painting The Battle of Warsaw (Miracle of the Vistula) was painted there in the 1950s, as well as a variation on Włodzimierz Tetmajer’s painting from 1900 Procession in Bronowice, which turns into a pilgrimage to Częstochowa. The vault shows a vision of the Mother of God as Queen of Poland surrounded by saints, mostly those connected with Poland. In the main altar there is a representation of St. Josaphat and Our Lady of Czestochowa.