Explanation:

Guru Har Gobind Ji issued many edicts. He set up an army, acquired arms and horses, hoisted the Sikh flag, and ordered the construction of an exceptionally large and thundering drum called the nagara, which was used to gather the sangat for announcements.Guru Ji was married at Baba Bakala, district Amritsar. Guru Ji had vast amounts of land here. A gurdwara and baoli stand here in memory of Guru Ji. Nishaans or flags of Guru Ji together with a Nagra or battledrums are still present here today.
The Nishan Sahib is a Sikh triangular flag made of cotton or silk cloth, with a tassel at its end. The word, Nishan means symbol, and the flag is hoisted on a tall flagpole, outside most Gurdwaras. The flagpole itself, covered with fabric, ends with a two-edged dagger (khanda) on top. The emblem on the flag is also known as Khanda, which depicts a double-edged sword called a khanda in the centre, a chakkar which is circular, and flanked by two single-edged swords, or kirpans.

Traditional symbol of the Khalsa Panth (corps of initiated Sikhs), the Nishan Sahib can be seen from far away, signifying the presence of Khalsa in the neighbourhood. It is taken down every Baisakhi (harvest festival, mid-April in the Gregorian calendar), and replaced with a fresh flag, and the flagpole refurbished.