India is set to initiate a large-scale tri-service military exercise named Exercise Trishul from October 30 to November 10, 2025, near the disputed marshlands of the Sir Creek region along the India-Pakistan border. The exercise will involve coordinated operations between the Indian Army, the Indian Navy, and the Indian Air Force, signalling India’s intent to bolster joint-force readiness and deterrence in a geopolitically sensitive area.
The Sir Creek marshy estuary, stretching about 96 kilometres between Gujarat’s Kutch region and Pakistan’s Sindh province, holds strategic value due to its terrain and access to sea routes. By staging Exercise Trishul in this challenging terrain, India is testing its ability to conduct amphibious, land, and air operations in concert — reflecting a shift toward integrated multi-domain warfare. A notice to airmen (NOTAM) has been issued over portions of Rajasthan and Gujarat airspace during the exercise period, underscoring its scale.
Defence analysts say the exercise will showcase the Indian armed forces’ tri-service synergy with operations across land, sea, and air components. Reports suggest the selected airspace for the exercise extends up to 28,000 feet and covers a significant zone along the western frontier. The involvement of the Indian Navy in maritime manoeuvres off the Saurashtra coast, alongside army units operating in desert and creek sectors, and air force deployments, illustrates the ambition of the drill.
The timing and setting of Exercise Trishul carry considerable diplomatic and strategic implications. In response to India’s NOTAM, Pakistan imposed its own airspace restrictions for October 28–29, hinting at heightened sensitivity to Indian military activity near the border. Indian officials maintain that the exercise is a routine preparedness measure. Nonetheless, the choice of the Sir Creek region — where India has recently expressed concern over Pakistan’s military infrastructure build-up — adds an edge to the exercise.
As Exercise Trishul gets underway from October 30 to November 10, 2025, it marks a pronounced step in India’s defence posture along its western frontier. By integrating Army, Navy, and Air Force capabilities and operating in the challenging Sir Creek terrain, India is reinforcing its joint-force readiness and deterrence message. While the exercise is officially described as routine, its location and scale reflect wider strategic signalling toward Pakistan and regional stability. The outcome and conduct of this drill will be closely watched as India continues to emphasise synergy, readiness, and operational depth in its defence strategy.
