The deployment of the main forces so far from the Dnieper was caused by the need to cover the border from possible hostile actions on the part of Poland.
Golitsyn's army consisted of regiments of the "new system", characterised by such poor discipline that the government issued arms to dragoons and raitars only during combat operations, but not on the march, justly fearing that otherwise they would sell their carbines and pistols.
[5] On the way Romodanovsky and Samoilovich sent reinforcements to Chigirin, the detachment of Colonel Fedor Tumashev (615 Belgorod dragoons and 800 Serdyuks), which secretly approached the besieged fortress, and in the morning of 20 August with unfurled banners and to the beat of drums entered Chigirin, managing to avoid losses either because of the sluggishness of the Turks, or because it was missed by the Tatars, who did not want a victory for the Sultan's troops for fear that the capture of Ukraine by the Turks will deprive the autonomy and Crimea.
Having landed, in a short fight they pushed back the Turkish detachment and, having occupied a bridgehead on the bank, began to build a retrenchment.
Having received a report from the khan and Turkish commanders that they could not hold back the Russians, Ibrahim Pasha sent them reinforcements, and with the remaining forces made a last desperate attempt to seize Chyhyryn.
[8] Meanwhile, Romodanovsky and Samoilovich had already transported 15,000 men under the command of Colonels Kosagov and Novitsky, who launched an attack and repulsed the numerically superior enemy forces.
Having expanded the occupied bridgehead, the Allies finished the crossing and "having won a notable victory over the enemy, many were beaten, driving them five versts from the Dnieper..." The Turks suffered significant losses (about 10,000 killed, according to the French ambassador in Constantinople F. de la Croix[10]), the son of the Crimean khan and the sons of the pasha were left lying on the battlefield.
[12] The defeat at Buzhyn's Pass forced Ibrahim Pasha to lift the siege of Chyhyryn on the night of 29 August and to retreat in a hurry in order not to be surrounded.
The merits of the commanders of the elected regiments, who took the brunt of the enemy's attack, were recognised by the tsar, who promoted them to the following ranks: Aggei Shepelev became lieutenant-general and Matvei Kravkov became major-general.