In an interview with TOI’s Surendra Singh, Chief of Army Staff General Upendra Dwivedi, who has been leading the 12.4 lakh-strong Indian Army since June 30, 2024 and played a key role in rolling out Operation Sindoor, spoke at length about how lessons learnt from last year's operation against Pakistan are now part of the Army doctrine; how drones are now central to India’s battlefield operations; the changing warfare tactics and technologies; and why Pakistan must deter from another terror attack on Indian soil. Excerpts:General Sir, you led the Army during the conflict with Pakistan last May and played a…