Bohdan Khmelnytsky vs M. A. G. Osmani

Khmelnytsky's Cossack forces, allied with Crimean Tatars, defeated a Polish army at Zhovti Vody. This victory marked the beginning of the Khmelnytsky Uprising, leading to widespread rebellion across Ukraine.

Bohdan Khmelnytsky was elected Hetman of the Zaporozhian Cossacks at a council on the Dnieper River. This election formalized his leadership of the Cossack uprising against the Polish-Lithuanian Commonwealth.

Khmelnytsky besieged the Polish fortress of Zbarazh for over six weeks. The siege ended with the Treaty of Zboriv, which granted autonomy to the Cossack Hetmanate but failed to achieve full independence.

Khmelnytsky's forces suffered a major defeat at Berestechko against the Polish army, with heavy Cossack casualties. This battle forced him to sign the unfavorable Treaty of Bila Tserkva, reducing Cossack autonomy.

Khmelnytsky signed the Treaty of Pereiaslav with Tsar Alexis of Russia, placing the Cossack Hetmanate under Russian protection. This treaty shifted Ukraine's allegiance from Poland to Russia, with lasting geopolitical consequences.

On December 16, 1971, Osmani was present at the surrender of Pakistani forces in Dhaka. The surrender ended the Bangladesh Liberation War and established Bangladesh as an independent nation. Osmani's leadership was crucial to the military victory.

On April 17, 1971, Colonel M. A. G. Osmani was appointed Commander-in-Chief of the Bangladesh Liberation Forces. He organized and led the Mukti Bahini guerrilla forces against the Pakistan Army during the nine-month Bangladesh Liberation War.

After the war, Osmani resigned from the Bangladesh Army in 1972 due to disagreements with the government of Sheikh Mujibur Rahman over military policy and the treatment of freedom fighters. He later entered politics but remained a respected figure.