In one of the largest drone incursions in the region, Pakistan deployed hundreds of UAVs targeting Indian military and strategic locations last year. While India activated its full air defence network, a surprising system played a critical role — the decades-old L-70 Bofors gun.Originally designed in the 1940s and inducted into the Indian Army in the 1960s, the L-70 has been upgraded with modern targeting systems, radar integration, and counter-drone capabilities. These enhancements have transformed it into an effective weapon against low-flying, hard-to-detect UAVs.This explainer breaks down how legacy systems like the L-70 are being adapted for modern warfare, why they remain relevant, and what this means for India’s evolving air defence strategy.