• India along with 23 other nations participated in a major Indian ocean-wide tsunami mock drill which will involve evacuation of thousands of people from coastal areas in over half a dozen coastal states.The exercise, known as 'IOWave18', is being organised by the Intergovernmental Oceanographic Commission (IOC) of UNESCO, which coordinated the setting up of the Indian Ocean Tsunami Warning and Mitigation System (IOTWMS).
  •  Ukraine has launched annual joint military exercise named Rapid Trident with the United States and other NATO (North Atlantic Treaty Organization) member countries. Its main goal is to practice countering armed aggression in conditions of the hybrid war. 
  • Indo-Kazakhstan Joint Army Exercise 'KAZIND' will be conducted between the Indian and Kazakhstan Army from 10 to 23 Sep 2018 in Otar region, Kazakhstan. This is the third joint military exercise between the two countries which have a history of extensive cooperation in the defence arena.
  •  Indian navy ships and aircraft have arrived in Sri Lanka to take part in the joint exercise SLINEX-2018  to be held with Sri Lankan navy at Trincomalee.
  • The first ever mid-air refuelling of the indigenously developed light combat aircraft Tejas was successfully carried out, placing India in an elite group of countries having air-to-air refuelling capacity for military planes. 
  • BIMSTEC Military Exercise (MILEX-18), the first edition of Military Field Training Exercise for the Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation (BIMSTEC) nations, started at Aundh in Pune. Participating countries are Armies of India, Bangladesh, Bhutan, Sri Lanka, Myanmar and Thailand. Nepal is not taking part in MILEX-18.
  • The 12 days long Indo-Mongolia joint exercise Nomadic Elephant-2018, commenced at Mongolian Armed Forces (MAF) Five Hills Training Area, Ulaanbaatar, Mongolia with a brief opening ceremony. Exercise Nomadic Elephant is an annual, bilateral exercise since 2006 which is designed to strengthen the partnership between the Indian Army and Mongolian Armed Forces. 
  • As part of the ongoing Indo-US defence cooperation, a joint military training Exercise Yudh Abhyas 2018 is scheduled to be conducted in the foothills of Himalayas at Chaubattia in Uttarakhand from 16 September to 29 September 2018.  
  • Russia has launched its biggest military exercise since the Cold War named "Vostok-2018", involving about 300,000 service personnel, in eastern Siberia. China is sending 3,200 troops to take part in "Vostok-2018".  The last Russian exercise of similar scale was in 1981, during the Cold War, but Vostok-2018 involves more troops. A key aim is to practise the rapid deployment of thousands of troops, as well as aircraft and vehicles, from western Russia to eastern regions, across thousands of miles. 
  •  Indigenously developed weapon system Man Portable Anti-Tank Guided Missile (MPATGM), was successfully flight tested for the second time from the Ahmednagar range, Maharashtra. All the mission objectives have been met. 
  • The second edition of Nepal-China joint military exercise (JME) named Mt Everest Friendship Exercise-2018 (Sagarmatha Friendship-2018) commenced in China’s southwestern Sichuan province. Sagarmatha is the Nepali name for Mt Everest, which stands in between both the countries. 
  • NASA launched its Ice, Cloud and Land Elevation Satellite-2, known as ICESat-2, which will use an extremely precise laser to collect measurement data to track the Earth's shrinking polar ice from Vandenberg Air Force Base in California.
  • Indian Space Research Organisation (ISRO) successfully launched PSLV C 42 with two British earth observation satellites NovaSAR and S1-4 in precision from the Sathish Dhawan Space Centre Sriharikota, Andhra Pradesh.The satellites were put into sun-synchronous orbit just over 17 minutes after liftoff from the first launch pad.
  • The Defence Acquisition Council (DAC), chaired by Raksha Mantri Smt. Nirmala Sitharaman accorded approval for the procurement of equipment for the Defence Forces valued at over Rs 9,100 crores.  The DAC approved procurement of two Regiments of Akash Missile Systems under 'Buy (Indian)' category from M/s BDL. 
  • Tripura Chief Minister Biplab Kumar Deb inaugurated ISRO’s first Space Technology Incubation Centre(STIC) at the National Institute of Technology Agartala via remote from Bengaluru. The Centre was launched at the first edition of ‘Spacetronics’ organised by the India Electronics and Semiconductor Association (IESA).
  • Defence Research and Development Organisation (DRDO) successfully flight tested the indigenously developed surface-to-surface tactical missile ‘Prahar’, from Launch Complex-III, ITR, Balasore, Odisha‘Prahar’ is a contemporary weapon system capable of carrying multiple types of warheads and neutralizing a wide variety of targets. 
  •  India successfully conducted an interceptor missile test off the Odisha coast, achieving a major milestone in developing a two-layer Ballistic Missile Defence system. According to Defence sources, the interceptor was launched from Abdul Kalam Island of the Integrated Test Range (ITR)
  • The Japan Aerospace Exploration Agency (JAXA) landed a pair of rovers on an asteroid, marking the world's first moving, robotic observation of an asteroid surface. The two rovers Hayabusa2 managed to land on the asteroid are expected to take advantage of the low gravity and jump around the surface, reaching heights of up to 15 meters. 
  • The Defence Acquisition Council (DAC) has approved procurement of 1,000 engines for fitment in T-72 tanks of the Army at an approximate cost of over 2,300 crore rupees. According to the Defence Ministry, the engines will enhance mobility, agility and acceleration of T-72 tanks making them more versatile and effective in the battlefield.
  •  The Indian Air Force successfully test fired the indigenously developed Beyond Visual Range Air-to-Air Missile Astra from a Su-30 aircraft. The missile, tested at the Kalaikunda Air Force Station, “successfully engaged a manoeuvring target with high precision.”In the series of trials held till date, Astra has been launched in the complete Su-30 flight envelope.