Qajar Iran lacked any regular and progressive army. No specific rules and regulations were developed for military service. Iranian army was characterized by total chaos and disarray. No age limit was specified for entrance...

Mohammad Reza Tabrizi Shirazi
 
Qajar Iran lacked any regular and progressive army. No specific rules and regulations were developed for military service. Iranian army was characterized by total chaos and disarray. No age limit was specified for entrance in military service. So, the army members ranged from old men to so young adults. Their salaries might not be paid for months. So Nasseraddin Shah did not believe in such military basically. Upon his journey to Russia, he enjoyed the military parade of Cossack soldiers before him and the Tsar in St. Petersburg. On understanding the Shah’s satisfaction of the ceremony, the Russian politicians encouraged him to concede to the formation of Cossack Brigade. And so he did. The Cossack Brigade was founded in 1879, and it played an important role in Iran’s political and military history. The military commanders and instructors were sent from St. Petersburg. The first Russian military delegation to investigate the affairs of the Cossack Brigade were sent to Iran under commander Col. Adomantvich who was accompanied by a few officers. In 1882, Kasakofski took his place.
 
On March eleventh, the text of the Agreement on the Cossack Brigade signed between Mirza Said Khan, Iranian Foreign Minister and Russian Foreign Minister was published in Habl ol matin newspaper. In 1880, the Cossack Brigade was comprised of two regiments and the Russian government gave an artillery to the brigade group as a gift. The budget of the Cossack Brigade was provided from the income of the Customs of northern Iran. Regulations were developed for the Cossack Brigade to be ruled by.  
 
Brigade commander in Iran received his instructions directly from the Shah and he had no responsibility towards the War Minister and Chancellor. In political matters, the commander of the brigade consulted only with the Russian ambassador. In the thick of the Constitutional Revolution, the commander of the brigade was Colonel Liakhov, who was directly commissioned from the Russian military Tehran. Iran’s brigade consisted of two regiments. Further to the cavalry, one infantry battalion, consisting of four companies and two artillery batteries (each consisting of four balls) and the total number was 1,500. The following officers were under Colonel Liakhov:  
 
1. Infantry Commander Captain Prebnivessov, infantry instructor.
2. Lt. A. G. Blaznov cavalry commander, cavalry instructor.
3. Captain Ushakov, artillery commander, artillery instructor.  
 
In addition, a military medical doctor, by the name of Vicheshko and a veterinarian served in the Iranian Cossack Brigade. A total of 28 Russian officers and 63 Russian warrant officers were among the Iranian Cossack brigade.  
 
The salary of the officers, and members of Cossack brigade was far more than that of Iran’s military troops and since they had a prosperous life. The plan for bombarding the Majlis and removing constitutionalism, and execution of Iranian freedom fighters was prepared by the Cossack commandant, colonel Liakhov, Russian ambassador to Tehran, M. de Hartwig, and was ratified by the military operations bureau in Caucasus and when approved by Tsar, Nicholas II, it became operational.