HistoryData
war1971

Battle of the Bangladesh Liberation War

December 9, 1971

This air assault enabled Indian forces to cross the Meghna River and encircle Dhaka, decisively shortening the 1971 Bangladesh Liberation War.

Quick Facts

Year
1971
Category
war

Key Facts

Operation name
Operation Cactus Lilly (Meghna Heli Bridge)
Dates
9–12 December 1971
Type
Air assault river crossing
Pakistani stronghold bypassed
Ashuganj / Bhairab Bazar
Strategic objective
Encirclement of Dhaka
Conceived by
Maj. Gen. Sagat Singh

Location

Map of Meghna River, BangladeshMap of Meghna River, BangladeshMeghna River, Bangladesh

Cause → Event → Consequence

Cause

Indian forces advancing toward Dhaka during the Indo-Pakistani War of 1971 faced the broad Meghna River and a fortified Pakistani stronghold at Ashuganj and Bhairab Bazar. A conventional crossing would have been costly and time-consuming, risking a prolonged stalemate and delaying the encirclement of the Pakistani garrison in Dhaka.

Event

Between 9 and 12 December 1971, the Indian Army and Indian Air Force executed Operation Cactus Lilly, airlifting troops by helicopter across the Meghna River. The operation, conceived by Maj. Gen. Sagat Singh, bypassed the Pakistani stronghold entirely, allowing Indian forces to advance rapidly toward Dhaka without direct confrontation at the river crossing.

Consequence

By successfully crossing the Meghna River from the air, Indian forces completed the encirclement of Dhaka. This maneuver foreclosed any Pakistani avenue of withdrawal or reinforcement and directly precipitated the Pakistani military's surrender on 16 December 1971, ending the war and enabling the emergence of Bangladesh as an independent state.

Belligerents & Mobilization Analysis

Side A

1 belligerent

India (Indian Army & Indian Air Force)
Key Commanders

Maj. Gen. Sagat Singh.

Side B

1 belligerent

Pakistan
Outcome
Indian forces successfully crossed the Meghna River, bypassed Pakistani defenses at Ashuganj/Bhairab Bazar, and completed the encirclement of Dhaka.

Timeline Context

Timeline around 197119711968196919701972197319741971 treaty between Italy and Tunisia1971 European Athletics Championships — 1971 edition of the European Athletics Championships1971 CONCACAF Championship — 1971 edition of the CONCACAF Championship association football competition1971 Formula One season — sports seasonEurovision Song Contest 1971 — 16th edition of the Eurovision Song Contest1971–72 UEFA Cup — inaugural season of Europe's secondary club football tournament organised by UEFA1971–72 European Cup — 17th season of the UEFA club football tournament1971 World Women's Handball Championship — 1971 edition of the World Women's Handball Championshipmeghna-heli-bridge-1971