Final answer:
The war-cry introduced by Banda Singh Bahadur was 'Raj Karega Khalsa', meaning The Khalsa shall rule. It reflected the Sikh struggle against Mughal oppression and the legacy of Sikh warriors.
Step-by-step explanation:
The new war-cry introduced by Banda Singh Bahadur was 'Raj Karega Khalsa' meaning The Khalsa shall rule. This cry signified the vision and strength of the Khalsa warriors in their struggle against oppression, particularly during the conflict with the Mughal Empire led by Aurangzeb. Sikhism, the religion of the Khalsa, emerged in the 15th century in the Punjab by blending elements of Hinduism and Islam, challenging the existing caste system and becoming legendary for their martial prowess.