"The Knights of the Cross, or, Krzyzacy: Historical Romance" by Henryk Sienkiewicz is a historical novel published in 1900. Set in medieval Poland, it follows young nobleman Zbyszko who swears to win three trophies from the Teutonic Knights for his beloved Danusia. His rash attack on a diplomatic envoy brings him to the executioner's block, but Danusia dramatically saves him. Their story unfolds against escalating conflict between Poland-Lithuania and the German Order, building toward the epic 1410 Battle of Grunwald that would seal the Teutonic Knights' fate. (This is an automatically generated summary.)