 |
| Defence Current Affairs October 2026: Exercises and Updates |
Defence Current Affairs October 2026 covers important developments in India's armed forces, military exercises, defence procurement and indigenous defence technology. Key updates include the commissioning of INS Samarthak on 16 October, contracts worth approximately ₹4,106 crore for GSAT-7C and Varunastra on 15 October, and a ₹770 crore radar contract for the Indian Army on 21 October.
This exam-focused article also covers Exercise AUSTRAHIND 2026, SIMBEX-2026, INDRA 2026 and the release of the Land Warfare Doctrine. Each update includes its date, the organisations involved and facts useful for SSC, UPSC, CDS, AFCAT, NDA, Railway and State PSC examinations.
Last Updated: 25 October 2026, 01:30 PM IST | Reviewed by Vijay Sah
Key points at a glance: INS Samarthak is the Indian Navy's first indigenous multi-purpose vessel; GSAT-7C is a dedicated communication satellite for the Indian Air Force; Varunastra is an indigenous ship-launched heavyweight anti-submarine torpedo; and the Improved Low Level Light Weight Radar is intended to detect and track aircraft and small drones.
Defence Current Affairs: Quick Highlights
| Topic | Date | Key Update |
|---|---|---|
| GSAT-7C and Varunastra | 15 October 2026 | Defence Ministry signed contracts worth approximately ₹4,106 crore for an IAF communication satellite and Navy torpedoes. |
| INS Samarthak | 16 October 2026 | The Indian Navy commissioned its first indigenous multi-purpose vessel. |
| Exercise AUSTRAHIND | 19 October 2026 | The fifth India-Australia joint military exercise began in Thiruvananthapuram, Kerala. |
| SIMBEX-2026 | 21 October 2026 | The 33rd Singapore-India maritime exercise commenced at Visakhapatnam. |
| Improved Low Level Light Weight Radar | 21 October 2026 | The Ministry of Defence signed a contract worth about ₹770 crore with BEL for the Indian Army. |
| INDRA 2026 | 23 October 2026 | The India-Russia bilateral naval exercise concluded following harbour and sea phases. |
| Land Warfare Doctrine | 23 October 2026 | Raksha Mantri Rajnath Singh released the doctrine at the Army Commanders' Conference. |
| Indigenous submarine AIP system | 24 October 2026 | The Indian Navy's indigenous air-independent propulsion programme reached a reported milestone with the inauguration of Setting to Work Phase-2 activity. |
Defence Contracts: GSAT-7C and Varunastra
On 15 October 2026, the Ministry of Defence signed contracts worth approximately ₹4,106 crore for two major defence capabilities: the GSAT-7C communication satellite for the Indian Air Force and Varunastra heavyweight torpedoes for the Indian Navy.
The GSAT-7C contract, valued at ₹2,563 crore, was signed with NewSpace India Limited (NSIL), Bengaluru. The satellite is designed to strengthen secure and resilient communications for Indian Air Force assets.
The Varunastra contract, valued at ₹1,543 crore, was signed with Bharat Dynamics Limited (BDL), Hyderabad. Varunastra is an indigenous ship-launched heavyweight anti-submarine torpedo developed by the Naval Science and Technological Laboratory.
Exam Point: GSAT-7C is associated with the Indian Air Force's communication requirements, whereas Varunastra strengthens the Indian Navy's anti-submarine warfare capability. The combined contract value is approximately ₹4,106 crore.
Source: Press Information Bureau, 15 October 2026.
Indian Army to Procure Improved Low Level Light Weight Radars
On 21 October 2026, the Ministry of Defence signed a contract worth approximately ₹770 crore with Bharat Electronics Limited (BEL) for Improved Low Level Light Weight Radars, known as LLLR-I, for the Indian Army.
According to the official announcement, the radar system can detect and track fighter-sized targets as well as mini and micro drones. It also has the capability to prioritise aerial targets, helping the Army respond to unmanned aerial system threats.
The procurement supports India's efforts to strengthen air-defence surveillance while expanding domestic defence manufacturing. BEL is the Indian defence electronics company named in the contract.
Exam Point: Remember the combination: ₹770 crore, BEL, Indian Army and detection of aircraft and small drones.
Source: Press Information Bureau, 21 October 2026.
Important Military Exercises in October 2026
Exercise AUSTRAHIND 2026
The fifth edition of the India-Australia joint military exercise AUSTRAHIND commenced on 19 October 2026 at the Foreign Training Node in Thiruvananthapuram, Kerala. The exercise is scheduled to run until 1 November 2026.
Approximately 120 personnel each from the Indian Army and Australian Army are participating. The Indian contingent includes troops from the Garhwal Rifles, while the Australian contingent includes personnel from 13 Brigade. A New Zealand observer delegation is also participating for the first time.
The exercise focuses on joint sub-conventional operations in island and coastal environments under a United Nations Chapter VII mandate. Training includes joint planning, tactical drills, surveillance, reconnaissance and responses to humanitarian assistance and disaster-relief situations.
Exam Point: AUSTRAHIND is an India-Australia joint military exercise. The 2026 edition is being held in Kerala.
Source: Press Information Bureau, 19 October 2026.
SIMBEX-2026
The 33rd edition of the Singapore-India Maritime Bilateral Exercise, SIMBEX-2026, commenced at Visakhapatnam on 21 October 2026. The exercise is scheduled for 21-26 October, with the harbour phase from 21 to 23 October and the sea phase from 24 to 26 October in the Bay of Bengal.
The Republic of Singapore Navy ship RSS Supreme arrived in Visakhapatnam to participate. The sea phase includes anti-submarine warfare, anti-surface and anti-air warfare drills, seamanship evolutions and tactical manoeuvres.
SIMBEX began in 1994 under the name Exercise Lion King. It has since developed into a regular maritime engagement between the Indian Navy and the Republic of Singapore Navy.
Exam Point: SIMBEX is a bilateral maritime exercise between India and Singapore. The 2026 edition is the 33rd edition.
Source: Press Information Bureau, 21 October 2026.
Exercise INDRA 2026
The Indian Navy and the Russian Federation Navy concluded the naval component of Exercise INDRA 2026 in October. The Ministry of Defence reported the conclusion on 23 October 2026 after INS Sahyadri departed Vladivostok on 20 October.
The naval exercise included harbour and sea phases. Activities covered professional exchanges, cross-deck visits, coordinated manoeuvring, integrated communications, helicopter operations and medical evacuation drills.
Exam Point: INDRA is the India-Russia bilateral military exercise. For this update, the relevant service branch is the Indian Navy and the Russian Federation Navy.
Source: Press Information Bureau, 23 October 2026.
Exercise Tarang Shakti 2026
The second edition of Exercise Tarang Shakti was hosted by the Indian Air Force at Air Force Station Jodhpur from 26 September to 12 October 2026. The Ministry of Defence reported on 12 October that the multinational air exercise had concluded.
Seven friendly foreign countries participated: Australia, Bangladesh, France, Germany, Sri Lanka, the United Arab Emirates and the United States. The exercise also included 32 observer nations. Its theme was “Power in Partnership”.
The exercise provided opportunities for joint missions, exchange of operational experience and greater interoperability among participating air forces.
Exam Point: Tarang Shakti is a multinational air exercise hosted by the Indian Air Force. The 2026 edition took place at Jodhpur.
Source: Press Information Bureau, 12 October 2026.
INS Samarthak: India's First Indigenous Multi-Purpose Vessel
The Indian Navy commissioned INS Samarthak on 16 October 2026. The commissioning ceremony was presided over by Vice President C. P. Radhakrishnan in the presence of senior naval and defence officials.
INS Samarthak is the first vessel in its class of multi-purpose vessels. It was designed and constructed by Larsen & Toubro's shipyard. The official announcement described it as the first major warship built by an Indian private shipyard.
The commissioning is relevant to questions about naval modernisation, indigenous shipbuilding and the participation of private industry in India's defence manufacturing sector.
Exam Point: INS Samarthak is the first indigenous multi-purpose vessel commissioned by the Indian Navy in this class. Its commissioning date was 16 October 2026.
Source: Press Information Bureau, 16 October 2026.
Land Warfare Doctrine Released at Army Commanders' Conference
On 23 October 2026, Defence Minister Rajnath Singh released the Land Warfare Doctrine at the Army Commanders' Conference in New Delhi. The conference was held from 21 to 23 October and brought together senior Indian Army leadership.
The doctrine provides an overarching framework for preparing the Army to address changing security conditions and the evolving character of warfare. Discussions at the conference covered operational preparedness, capability development and the Army's future transformation.
Exam Point: The Land Warfare Doctrine was released by Rajnath Singh on 23 October 2026 at the Army Commanders' Conference in New Delhi.
Source: Press Information Bureau, 23 October 2026.
Indigenous Air-Independent Propulsion System
On 24 October 2026, the Ministry of Defence reported a key milestone in the indigenous air-independent propulsion (AIP) system programme for the Indian Navy's diesel-electric submarines. The announcement concerned the inauguration of the Setting to Work Phase-2 activity.
An AIP system allows a conventional submarine to remain submerged for longer periods without relying on its diesel engines to recharge batteries as frequently. This can improve underwater endurance, although actual performance depends on the system and submarine configuration.
Exam Point: AIP stands for air-independent propulsion. It is associated with extending the submerged endurance of conventional diesel-electric submarines.
Source: Press Information Bureau, Ministry of Defence releases, 24 October 2026.
Defence Current Affairs: Important One-Liners
- GSAT-7C is a dedicated communication satellite capability for the Indian Air Force.
- Varunastra is an indigenous ship-launched heavyweight anti-submarine torpedo.
- Bharat Electronics Limited received a contract worth approximately ₹770 crore for Improved Low Level Light Weight Radars on 21 October 2026.
- AUSTRAHIND is a joint military exercise between India and Australia.
- SIMBEX is the Singapore-India Maritime Bilateral Exercise.
- INDRA is the India-Russia bilateral military exercise.
- Tarang Shakti is a multinational air exercise hosted by the Indian Air Force.
- INS Samarthak was commissioned on 16 October 2026.
- The Land Warfare Doctrine was released on 23 October 2026.
- AIP means air-independent propulsion and is relevant to conventional submarine endurance.
Defence Current Affairs MCQs
Q1. Which company received the ₹770 crore contract for Improved Low Level Light Weight Radars?
A. Hindustan Aeronautics Limited
B. Bharat Electronics Limited
C. Bharat Dynamics Limited
D. NewSpace India Limited
Correct Answer: B. Bharat Electronics Limited
Q2. GSAT-7C is intended to strengthen communications for which service?
A. Indian Army
B. Indian Coast Guard
C. Indian Air Force
D. Border Security Force
Correct Answer: C. Indian Air Force
Q3. Varunastra is which type of weapon?
A. Air-to-air missile
B. Ship-launched heavyweight anti-submarine torpedo
C. Main battle tank
D. Air-defence radar
Correct Answer: B. Ship-launched heavyweight anti-submarine torpedo
Q4. Exercise AUSTRAHIND is conducted between India and which country?
A. Australia
B. Russia
C. Singapore
D. France
Correct Answer: A. Australia
Q5. Which two navies participate in SIMBEX?
A. Indian Navy and Russian Federation Navy
B. Indian Navy and Republic of Singapore Navy
C. Indian Navy and Royal Australian Navy
D. Indian Navy and French Navy
Correct Answer: B. Indian Navy and Republic of Singapore Navy
Q6. INS Samarthak was commissioned into which service?
A. Indian Army
B. Indian Air Force
C. Indian Navy
D. Indian Coast Guard
Correct Answer: C. Indian Navy
Q7. Who released the Land Warfare Doctrine on 23 October 2026?
A. Chief of the Naval Staff
B. Chief of the Air Staff
C. Defence Secretary
D. Defence Minister Rajnath Singh
Correct Answer: D. Defence Minister Rajnath Singh
Q8. What does AIP stand for in submarine technology?
A. Advanced Interceptor Platform
B. Air-Independent Propulsion
C. Automatic Infantry Protection
D. Aerial Intelligence Protocol
Correct Answer: B. Air-Independent Propulsion
Quick Revision Table
| Item | Important Fact |
|---|---|
| GSAT-7C | Communication satellite capability for the Indian Air Force |
| Varunastra | Indigenous ship-launched heavyweight anti-submarine torpedo |
| LLLR-I | Improved radar for detecting and tracking aircraft and small drones |
| AUSTRAHIND | India-Australia joint military exercise |
| SIMBEX | India-Singapore maritime exercise |
| INDRA | India-Russia bilateral military exercise |
| Tarang Shakti | Multinational air exercise hosted by the Indian Air Force |
| INS Samarthak | First indigenous multi-purpose vessel in its class commissioned by the Indian Navy |
| AIP | Air-independent propulsion for conventional submarines |
Frequently Asked Questions
1. What were the major defence updates in October 2026?
Key updates included contracts for GSAT-7C and Varunastra, commissioning of INS Samarthak, the Indian Army's radar contract, several international military exercises and the release of the Land Warfare Doctrine.
2. What is the purpose of the GSAT-7C satellite?
GSAT-7C is intended to strengthen secure and resilient communication capabilities for Indian Air Force assets.
3. Which countries participate in Exercise AUSTRAHIND?
AUSTRAHIND is a joint military exercise between India and Australia. The 2026 edition began in Thiruvananthapuram, Kerala, on 19 October.
4. What is the role of Varunastra?
Varunastra is an indigenous ship-launched heavyweight torpedo developed for anti-submarine warfare by the Indian Navy.
5. What is an air-independent propulsion system?
An air-independent propulsion system helps a conventional diesel-electric submarine remain submerged for longer without frequently surfacing or using its diesel engines to recharge batteries.
Also Read
Sources referred: PIB: GSAT-7C and Varunastra contracts, PIB: Army radar contract, PIB: AUSTRAHIND 2026, PIB: SIMBEX-2026, PIB: INDRA 2026, PIB: INS Samarthak, PIB: Tarang Shakti 2026, PIB: Land Warfare Doctrine, Press Information Bureau, Ministry of Defence releases dated 24 October 2026 on the indigenous submarine AIP system.
.webp)
