From the Osprey Warsaw 1920

 FIRST HORSE ARMY’S BREAKTHROUGH, MAY 1920

The arrival of Budënniy's First Horse Army around Uman in May 1920 played the central role in defeating the Polish army in Right-Bank Ukraine. The initial attacks at the end of May 1920 were repulsed with heavy losses to both sides. After a shift in tactics to subject Polish defences to more firepower, the First Horse Army was able to finally penetrate the main defence lines on 5 June 1920, precipitating a rout of the Polish Third Army from Kiev. The Bolshevik cavalry, primarily based on Cossack regiments, fought almost entirely from horseback and shunned dismounted dragoon tactics.

Artwork from Warsaw 1920, illustrated by Steve Noon.