1. Jallianwala Bagh is a place where only one entrance is there and the area was surrounded by high buildings which was the main reason for the high number of casualties.
2. Jallianwala Bagh is not a park or a garden, just an empty space with the area closed on three sides. It was located in Amritsar, Punjab.
3. The Jallianwala Bagh massacre took place on Baisakhi day on 13 April 1919.
4. Angry with the arrests of prominent freedom fighters Satya Pal and Saifuddin Kitchlew, a mob left an English missionary named Marcella to death on the streets. This angered Col. Dyer.
5. On April 12, 1919, Colonel Dyer banned public gatherings. Unaware of this ban, the public gathered at Jallianwala Bagh to celebrate Baisakhi, one of the biggest festivals in Punjab.
6. Colonel Dyer with a force of 50 soldiers reached the place and without any warning he ordered his troops, "FIRE!"
7. The firing continued for 10 to 15 minutes. It is estimated that 1,650 rounds of bullets were fired. The firing ended only when the bullets were exhausted.
8. Apart from the bullets, some people died by jumping into the well, and others due to the stampede.
9. As per the official report, around 379 people were killed and thousands were injured but the unofficial report said that around 1,000 people were killed in the massacre.
10. Udham Singh killed Colonel Reginald Dyer on 13th March 1940, an act of revenge for the Jallianwala Bagh massacre.