Translation of  Soviet cyphertext decrypted by cryptologists of the Polish Army  during Battle of Warsaw (August 1920) , decisive battle of the Polish-Soviet War, made by <a href="https://en.wikipedia.org/wiki/Jan_Kowalewski" class="extiw" title="en:Jan Kowalewski">Jan Kowalewski</a> - Polish cryptologist, intelligence officer - creator and first head of the Polish Cipher Bureau.
Polish Army 1920
1920-08
<a href="https://pl.wikipedia.org/wiki/Centralne_Archiwum_Wojskowe" class="extiw" title="pl:Centralne Archiwum Wojskowe">Centralne Archiwum Wojskowe</a>