“Charaina” literally means “four mirrors” and consists of a breast plate, back plate and 2 side plates with cutaways to go under the arms, it is held together by leather straps and buckles on the shoulders and sides. Guru Gobind Singh ji wore this armour at the Battle of Bhangani which took place on 18 September 1688.
This battle with the Hill Chiefs (Pahari Rajas) is narrated by Guru Gobind Singh ji in his Sri Bachitra Natak? (Sri Dasam Granth Sahib). It is in this battle that after having 3 arrows shot at him by Hari Chand that Guru Sahib utters ?Jabe Baan Lagyo, Tabe Ros Jagay “When the edge of the arrow touched my body, it kindled my war spirit”