The Jallianwala Bagh massacre , also known as the Amritsar massacre , took place Process_start on 13 April 1919 when Acting Brigadier-General Reginald Dyer ordered Request troops of the British Indian Army to fire Use_firearm their rifles into a crowd of unarmed civilians in Jallianwala Bagh , Amritsar , Punjab , killing Killing at least 400 , including 41 children , one only six weeks old .

Dyer blocked Hindering the main exits , and the troops continue to fire Use_firearm into the fleeing Escaping civilians until their ammunition was almost exhausted Expend_resource .

On Sunday , 13 April 1919 , Dyer , convinced Convincing a major insurrection could take place Process_start , banned Preventing_or_letting all meetings Social_event .

Dyer and his troops entered Arriving the garden , blocking Hindering the main entrance behind them , took up Conquering position on a raised Cause_change_of_position_on_a_scale bank , and with no warning Warning opened fire on the crowd for about ten minutes , directing Aiming their bullets largely towards the few open gates through which people were trying to flee Escaping , until the ammunition supply Supply was almost exhausted Expend_resource .

The following day Dyer stated Statement in a report Reporting that `` I hear Perception_active that between 200 and 300 of the crowd were killed Killing .

Dyer retired Process_end from the army and he returned Arriving to England , where he died Death unrepentant in 1927 .

Eminent author Rudyard Kipling declared Expressing_publicly at the time that Dyer `` did his duty as he saw it '' .

The ineffective inquiry Criminal_investigation , together with the initial accolades for Dyer , fuelled great widespread Dispersal anger against the British among the Indian populace , leading to the Non-cooperation Movement of 1920–22 .