The film tells about life, military training, friendship between Soviet and Polish soldiers. Ryazan city. Opening of the monument to the Soviet-Polish brotherhood in arms. Present: V. Jaruzelsky, D. Ustinov, veterans. Newsreel. Military camp. Formation of the first Polish infantry division. T. Kosciuszko. Taking the oath. Combat operations of the division during the Great Patriotic War. Warsaw is burning, houses are crumbling. Soviet and Polish soldiers liberate Warsaw. Restored Warsaw after World War II. Monuments. Streets. City of Krakow during the war and after the war. War veterans among children. Guys with Soviet soldiers. Fire. The forest is on fire. Soviet soldiers serving in Poland extinguish the fire. Soldiers in the museum. Polish cadets in class at the Military Academy in Moscow. Cosmonauts passing by: Polish cosmonaut J. Germaszewski and P. Klimuk. Lieutenant Colonel of the Polish Army L. Komarnitsky and Soviet Major V. Nikulin in joint field exercises. Helicopters are flying. Tanks are crossing the river. Polish and Soviet soldiers are passing over the pontoon bridge. Soldiers at lunch. People on the streets of the city. Honor guard at the monument.