Mood: The mood of the video appears to be patriotic and intense, with a sense of pride and bravery. The theme seems to be related to the Indian military, specifically the Sikh regiment, and may depict a story of heroism and sacrifice. The emotion conveyed is one of strength and unity among the soldiers.

Environment: The setting of the video appears to be a historical or war-time setting, possibly during World War I or the Indian independence movement. The stone steps and brick wall in the background suggest a fort or a military outpost. The soldiers are dressed in British Indian Army uniforms, which further supports this inference.