Ktož jsú boží bojovníci

"Ye Who Are Warriors of God", the English translation of "Ktož jsú Boží bojovníci" from Old Czech, is a 15th-century Hussite war song.

The Prussian 19th-century historian, Heinrich von Treitschke, makes a clearly indignant reference to the Hussite taking of land near the Baltic Sea and to "Kdož jsou Boží bojovníci" with these words: "greeted the sea with a wild Czech song about God's warriors and filled their water bottles with brine in token that the Baltic once more obeyed the Slavs."

The song was used by Bedřich Smetana in his tone poems Tábor and "Blaník," and in a Czech march entitled "Slava chodsku" (Hail to the Chod Country!").

It was also combined with a Catholic carol sung during the time of King Wenceslaus IV by Antonín Dvořák in his work Husitská ouvertura (Hussite Overture).

Karel Husa also incorporated the tune in his Music for Prague 1968, as did Karl Amadeus Hartmann in the Concerto funebre (1939, rev.