Today Marks 263rd Shaheedi Diwas of One of the most Hallowed person in Sikhi, Baba Deep Singh Ji.
Here's a Thread about Baba Deep Singh Ji Shaheed

Ahmad Shah Abdali was able to escape to Lahore. Angered by the attack from the Sikhs, he decided to destroy the Sikh community. He appointed his son, Tamur Shah, as the governor of Lahore, and made Jahan Khan his general. (1/15)

In order to destroy the source of the Sikh's spiritual strength, he ordered Jahan Khan to destroy Sri Harimander Sahib. Following orders, in 1757, Jahan Khan proceeded to Amritsar with heavy artillery. (2/15)

When Baba Ji learned about the disturbing news that, he immediately declared his intention of expelling the Afghans and rebuilding the gurdwara. He took a vow not to come back alive without fulfilling this mission. (4/15)

Baba Deep Singh Ji did ardaas while promising to get to Sri Harimander Sahib: "Sir jaave ta jaave, mera Sikhi sidhak na jaave" (If my head is severed, let it be, but don't severe my Sikh way of life)"
Although Baba Deep Singh Ji was seventy-five years old, (5/15)

he still had the strength of a young warrior. He gathered a large group of Sikhs and advanced towards Sri Harimander Sahib. By the time they reached the village of Tern Taran, about ten miles from Amritsar, their numbers had risen to about five thousand. At this time, (6/15)

Baba Ji drew a line on the ground with his khanda, and asked only those who were willing to fight and die to cross the line. All of the Sikhs there crossed the line eagerly. Baba Deep Singh Ji then recited the shabad: "Jo to praym khaylan ka chaao, (7/15)

sir dhar talee galee mayree aao." (Those who wish to play the game of love (follow Sikhism), come to me with your head in your palm.) "It maarag pair dhareejai, sir deejai kaan na keejai." (If you wish your feet to travel this path, (8/15)

don't delay in accepting to give your head.)
When news of Baba Deep Singh Ji's intentions reached Jahan Khan, he immediately mobilized an army of 20,000 men and proceeded towards Taran Taaran. (9/15)

Baba Deep Singh Ji's army intercepted Jahan Khan's forces near the village of Goharwal, about five miles from Amritsar. At this point, there was a clash between both sides. Baba Deep Singh Ji fought with his 18-ser khanda (weighing about 32 lbs.). (10/15)

Each Sikh fought with such great valor and courage that the enemy was almost defeated. During the midst of battle, a large army of reinforcements arrived for Jahan Khan's men, turning the odds against the Sikhs. Yet, (11/15)

the Sikhs with Baba Deep Singh Ji as their head continued fighting and advancing towards Amritsar.
During the clash, one of the Mogul commanders, Jamal Khan, attacked Baba Deep Singh Ji. As they fought, both men swung their weapons with great force, (12/15)

leaving both of their heads separated from their bodies. After seeing this scene, a young Sikh warrior called out to Baba Ji, reminding him of his vow to reach Sri Harimander Sahib. Upon hearing this, Baba Deep Singh Ji immediately stood up, (13/15)

holding his head on his left palm while holding his khanda upright in his right hand. He then continued fighting and moving towards Sri Harimander Sahib. Upon seeing the sight of Baba Deep Singh Ji, most of the men in the Mogul army fled away in terror. (14/15)

Baba Deep Singh Ji was able to continue fighting and reached Sri Harimander Sahib. He bowed his head at the parikarma (rectangular walkway) of Sri Harimander Sahib and lay there as a martyr.

(15/15)

Baba Deep Singh Ji's shaheedi incited the Sikhs to continue to fight against Mogul oppression for many years. Even today, his life serves as an example for all Sikhs on how to live and die with dignity.

Aisi Marni Jo Marey, Bahur Na Marna Hoye

Jao Tau Prem Khilan ka Chao
Sir Thar tali Gali Meri Aao

Dhan Dhan Baba Deep Singh Ji Shaheed

Picture/Video credits to respective owners
Bhul Chuk Maaf