On which date Indian troops moved into East Pakistan and began to advance toward Dacca.

On which date Indian troops moved into East Pakistan and began to advance toward Dacca.

کس تاریخ کو ہندوستانی فوجیں مشرقی پاکستان میں داخل ہوئیں اور ڈھاکہ کی طرف پیش قدمی شروع کر دیں۔
Explanation

ð  The war of 1971 between India and Pakistan lasted for 13 days from 3 December 1971 to the fall of Dacca (Dhaka) on 16 December 1971 .

ð  The war began with Operation Chengiz Khan's preemptive aerial strikes (india).

ð  on 16 December 1971 in Dhaka, marking the formation of East Pakistan as the new nation of Bangladesh.

ð  Officially, East Pakistan had earlier called for its secession from Pakistan on 26 March 1971.