'Yan kasar Lithuania sun kai farmaki a Halych, Lodomeria, da Poland, inda suka kusa kaiwa Cracow a watan Nuwamba 1376. Wani tarzoma ya barke a Cracow a kan mahaifiyar sarauniya Elizabeth, wanda ba a so, a ranar 6 ga Disamba.Masu tarzomar sun kashe kimanin bayin sarauniya-uwar 160, inda suka tilasta mata tserewa zuwa Hungary.Yin amfani da yanayin, Władysław the White, Duke na Gniewkowo, wanda namiji ne na daular Piast, ya sanar da da'awarsa ga kambi na Poland.Duk da haka, 'yan jam'iyyar Louis sun ci nasara da mai yin riya, kuma Louis ya sanya shi abbot na Pannonhalma Archabbey a Hungary.Louis ya nada Vladislaus II na Opole gwamnansa a Poland.A lokacin rani na 1377, Louis ya mamaye yankunan da Yariman Lithuania, George, ke Lodomeria.Ba da daɗewa ba sojojinsa na Poland sun kama Chełm, yayin da Louis suka kwace kujerar George, Belz, bayan da suka yi mata kawanya na tsawon makonni bakwai.Ya haɗa yankunan da aka mamaye a Lodomeria, tare da Galicia, cikin Masarautar Hungary.Sarakunan Lithuania uku - Fedor, Yariman Ratno, da sarakunan Podolia guda biyu, Alexander da Boris - sun yarda da amincin Louis.