The main altar contains a sculpture of the patron saint of the church , Our Lady Queen of the Polish Crown . Beneath the sculpture there is a steel grating with hundreds of military decorations and votive plaques donated by the soldiers . To the left there is a small '' Chapel of the Polish Soldier - a Mausoleum of the Defenders of the Motherland '' . Among the battles featured on stone slabs there are the battle of Cedynia , battle of Grunwald , battle of Vienna , battle of Westerplatte , defence of Warsaw , Warsaw Uprising and the battle of Berlin , as well as other battles of World War II . A chapel to the right of the altar is devoted to the victims of the Katyn massacre . Approximately 15,000 small tablets mark the names of the Polish officers mass murdered by the NKVD in 1940 , while additional 7000 wait for the names of those , whose bodies are yet to be found . Some of the pre-war paintings that were destroyed by the Germans in 1944 were replaced with paintings by Michael Willmann , brought to Warsaw from Silesia after the war
Katyn massacre
Katyn massacre
Field Cathedral of the Polish Army