Below are given some sentences out of which the sentence numbered 4 has been correctly placed. The rest of the sentences A, B, C, D, E, F need to be arranged correctly in order to form a logical order.

A. The war began when Pakistan made preemptive airstrikes on 11 Indian air stations.

B. The war ended when the Eastern Command of the Pakistan military signed the instrument of surrender on December 16, in Dhaka.

C. The Indo-Pakistan war of 1971 was a military confrontation between India and Pakistan that occurred from December 3, 1971, to the fall of Dhaka on December 16 of the same year.

4. It was one of the shortest wars in history, lasting just 13 days.

D. This event marked the formation of East Pakistan as the new nation of Bangladesh.

E. During the short war, Indian and Pakistani militaries clashed both on the Eastern and Western fronts.

F. This led to the commencement of hostilities between India and Pakistan with India entering the war of independence in East Pakistan on the side of the Bengali nationalists.