"Song of Igor's Campaign" is a 12th-century epic poem from Kievan Rus, detailing the military expedition of Prince Igor Svyatoslavich against the Polovtsians. The poem highlights themes of heroism, fate, and the struggles of the Russian principalities during a time of conflict. The work is notable for its rich imagery and lyrical style, blending historical events with folklore. It reflects the cultural and political landscape of the time, emphasizing the importance of unity among the Slavic tribes in the face of external threats. The poem remains a significant piece of Slavic literature.