When there was too much injustice in the world and Guru Hargobind Sahib couldn't bear it any longer that was when Sikh guru's defended their and other peoples religions in a war. But keep in mind the Sikh's NEVER attacked the enemy forces first if the enemy attacked the Sikh's first then the Sikhs would defend themselves
The Sikh gurus became soldiers because they faced persecution and violence from the Mughal rulers of India. They believed in defending themselves and their followers against oppression and injustice. They also emphasized the concept of miri and piri, which combined spiritual and temporal authority, necessitating the need to protect their community.
Guruprabs is the name of the festival which celebrate the birthdays of Sikh Gurus.
The 10 Gurus
Three.
they celebrate the birthdays of the gurus
Sikh Gurus
Celebration of Sikh Gurus birthdays, Vaisakhi, Diwali, Hola Mola.
The Chicken
Dev is just a Sikh surname which some of the Gurus had.
Guru Angad
The Guru can inspire anyone and everyone depending on individual's own state of mind. Guru is the same for everybody, therefore inspiration from Guru comes at personal level. On the other hand, Sikh Gurus from the begining opposed superstitons, rituals, cermonies, they fought against tyranny. All their sacrifices is known to any practising Sikh. Thus, it insipires them in their day to day life.
Guru Ramdas, the fourth of the Sikh Gurus
In the line of Sikh Gurus, Guru Tegh Bahadur Ji was the second martyr who was executed by Emperor Aurangzeb.