The M1902 gun was the mainstay of Russian Empire artillery; as such it was extensively used in World War I and the Russian Civil War and remained in service in former parts of the Russian Empire (Soviet Union, Poland, Finland). It was also adopted by some other countries (Romania, Turkey). By 192 8, the M1902 formed the bulk of the Red Army's 2,500 artillery pieces.
In the four squadrons (3 Don and 1 Black Sea), the regiment participated in the Patriotic War (1st Western Army, 1st Cavalry Corps of Lieutenant-General F.P. Uvarov).
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June 12, the regiment participated in the first battle with the French at the crossing on the river. The Niemen. After the crossing of Napoleon through Neman, the Cossack cossacks covered the retreat of our army and from 14 to 23 July fought without interruption with the advancing French avant-garde. July 15 in the battle of Vitebsk, the regiment captured a French battery: "The Cossack leybes first went several times to attack. In one of them the choicest donts flew over the battery near which Napoleon stood, and made such an alarm around him that he stopped for some time his actions. "
Leib-Cossacks fought valiantly in a 2-day battle near Smolensk and at Valutina mountain.
On August 26, the regiment distinguished itself in the battle of Borodino, participating in the swift attack of Platov and Uvarov on the left flank of the French. When the army retreated to Moscow, the Cossacks were in the rearguard of Platov and repeatedly stopped the onslaught of the enemy. On September 2, three regiment squadrons, cut off from the rearguard, joined the detachment of General Vincenterode, who covered the way to Petersburg. The squadron, formerly under Count Orlov-Denisov, remained in the main army and took part in the battles of Tarutin, Maroyaroslavets, Vyazma, Lyakhov and Krasny. At the end of December 1812 the regiment joined together and settled in the vicinity of Vilna.
After the arrival of Emperor Alexander I, the regiment formed an imperial convoy, and accompanied the Emperor in all campaigns and battles of 1813-1814.
May 8, 1813 in battle at Bautzen, one of the exadrons was appointed to the detachment gr. Orlova-Denisova and made several attacks.
October 4, 1813 - the regiment distinguished itself in the Leipzig battle, an attack on the French cuirassier Latour-Mobura, than saved from the capture of Emperor Alexander I and rescued the Russian light Guards cavalry, attacked by the enemy on the march and did not have time to build. He was awarded the St. George standard and silver pipes.
March 13, 1814 - In the battle of Fer-Champenois, a hundred regiments in the Guards light cavalry division broke through to the rear of the advancing troops of Mortier and Marmont near the village of Vorefroi, forcing the enemy to retreat, then participated in a battle with the French cavalry near the village of Lenare and attacked the Mortier quads and Marmont on the heights of Lint. On March 19, 1814, the regiment solemnly entered Paris and settled on the Champs-Elysees. Cossacks regiment accompanied Napoleon to the island of Elba.