The Indian Army is the land-based branch and largest component of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Army, and its professional head is the Chief of Army Staff (COAS). The Indian Army was established on 1 April 1895 alongside the long established presidency armies of the East India Company, which too were absorbed into it in 1903. Some princely states maintained their own armies which formed the Imperial Service Troops which, along with the Indian Army formed the land component of the Armed Forces of the Crown of India, responsible for the defence of the Indian Empire. The Imperial Service Troops were merged into the Indian Army after independence. The units and regiments of the Indian Army have diverse histories and have participated in several battles and campaigns around the world, earning many battle and theatre honours before and after Independence.
The III Corps is a formation of the Indian Army that was formed during World War I in Mesopotamia during its respective campaign. Prior to the reorganization of the British and Indian forces in Mesopotamia, it was designated as the Tigris Corps.
XXXIII Corps is a corps of the Indian Army. It draws some of its heritage from the British Indian XXXIII Corps which was formed in 1942, but disbanded in 1945. It was re-raised in 1960 at Shillong.
The Line of Actual Control (LAC), in the context of the Sino-Indian border dispute, is a notional demarcation line that separates Indian-controlled territory from Chinese-controlled territory. The concept was introduced by Chinese premier Zhou Enlai in a 1959 letter to Jawaharlal Nehru as the "line up to which each side exercises actual control", but rejected by Nehru as being incoherent. Subsequently, the term came to refer to the line formed after the 1962 Sino-Indian War.
The 2nd Division was an infantry division of the Indian Army during World War II and was disbanded in 1944. In its present form, 2 Mountain Division, raised in 1962, is part of the Indian Army.
I Corps is a military field formation of the Indian Army. The Corps is headquartered at Mathura in Uttar Pradesh. It was raised on 1 April 1965. It was still being raised when it was despatched to the front in 1965. Raised as the First Strike Corps of the Indian Army, it was launched into operations in the Sialkot sector. The Corps conducted a counteroffensive during the Indo-Pakistani War of 1965. In the 1971 war against Pakistan, it took part in the Battle of Basantar.
In 1986–87, a military standoff took place between India and China in the Sumdorong Chu Valley bordering the Tawang district, Arunachal Pradesh and Cona County, Tibet. It was initiated by China moving a company of troops to Wangdung, a pasture to the south of Sumdorong Chu that India believed to be its territory. The Indian troops stood their ground on the neighbouring Longro La ridge and both the sides moved a large number of troops to the border. The crisis was diffused after the visit of Indian External Affairs minister to Beijing in May 1987. The standoff gave rise to fears of escalation. Subsequently, India and China formulated agreements for managing future border tensions.
The Sino–Indian border dispute is an ongoing territorial dispute over the sovereignty of two relatively large, and several smaller, separated pieces of territory between China and India. The first of the territories, Aksai Chin, is administered by China and claimed by India; it is mostly uninhabited high-altitude wasteland but with some significant pasture lands at the margins. It lies at the intersection of Kashmir, Tibet and Xinjiang, and is crossed by China's Xinjiang-Tibet Highway; the other disputed territory is south of the McMahon Line, in the area formerly known as the North-East Frontier Agency and now a state called Arunachal Pradesh. It is administered by India and claimed by China. The McMahon Line was signed between British India and Tibet to form part of the 1914 Simla Convention, but the latter was never ratified by China. China disowns the McMahon Line agreement, stating that Tibet was not independent when it signed the Simla Convention.
The XIV Corps or The Fire and Fury Corps is a corps of the Indian Army. It is the Army's Udhampur-based part of the Northern Command. The 14th Corps forms a military deployment in the Kargil-Leh area guarding the frontiers with China and Pakistan. It also guards the Siachen Glacier.
The Northern Command is a Command of the Indian Army. It was originally formed as the Northern Army of the British Indian Army in 1908. It was scrapped upon India's independence in 1947 and later re-raised in 1972. Currently, the XIV Corps (Leh), XV Corps (Srinagar), I Corps (Mathura) and XVI Corps (Nagrota) are under its control. Its present commander is Lieutenant General M. V. Suchindra Kumar.
The Arunachal Scouts is an infantry regiment of Indian army based in Arunachal Pradesh. Specialising in mountain warfare the regiment was established with the purpose of defending the Indian-Chinese border in Arunachal Pradesh. A large proportion of the Arunachal Scouts are local to the region in which they work. Previously Part of the Indian Army’s Assam Regiment, the Arunachal Scouts consist of two battalions, the first raised in 2010 and second in 2012.
The Eastern Command is one of the six operational commands of the Indian Army. It is headquartered in Fort William in the city of Kolkata in the state of West Bengal. The Eastern Command was formed on 1 November 1920. The Command is commanded by a three-star rank officer with the title General Officer Commanding-in-Chief (GOC-in-C).
The Western Theater Command is one of the five theater commands of the People's Liberation Army, founded on 1 February 2016.
Border Personnel Meeting points are locations along the disputed Sino-Indian territories on Line of Actual Control (LAC) where the armies of both countries hold ceremonial and practical meetings to resolve border issues and improve relations. While border meetings have been held since the 1990s, the first formal Border Personnel Meeting point was established in 2013. There are five meeting points: two in the Indian Union Territory of Ladakh, one in Sikkim, and two in Arunachal Pradesh in India's Central and Eastern sectors.
Beginning on 5 May 2020, Chinese and Indian troops engaged in aggressive melee, face-offs, and skirmishes at locations along the Sino-Indian border, including near the disputed Pangong Lake in Ladakh and the Tibet Autonomous Region, and near the border between Sikkim and the Tibet Autonomous Region. Additional clashes also took place at locations in eastern Ladakh along the Line of Actual Control (LAC).
India–China Border Roads is a Government of India project for developing infrastructure along the Sino-Indian border by constructing strategic roads, including bridges and tunnels. The ICBR project is largely in response to Chinese infrastructure development along the borderlands with India.
In early May 2020, troops of the People's Liberation Army and Indian Army engaged in melee at locations along the notional Line of Actual Control (LAC), the disputed boundary between China and India. It escalated on 15/16 June 2020 resulting in deaths on both sides. Indian sources reported the deaths of 20 Indian soldiers and casualties of at least 45 Chinese soldiers. China reported 4 deaths. On 7 September, for the first time in 45 years, shots were fired along the LAC, with both sides blaming each other for the firing. Indian media also reported that Indian troops fired warning shots at the PLA on 30 August.
Border infrastructure along the Sino-Indian border, which has several border areas disputed by both India and China, encompasses irrigation, roads, railways, airports, natural gas and oil pipelines, electricity grids, telecommunications, and broadcasting. In the context of the border tensions between India and China, many of these infrastructure projects in the borderlands are considered strategic in nature. Commentators have noted the infrastructure gap that existed, and still exists, between the infrastructure on the borderlands of India and China. For many decades, the approach taken to the construction of border infrastructure by China and India was significantly different, however, in terms of utilizing the natural resources of the borderlands for the needs of the country, both countries are said to have a similar approach.
Indian order of battle during the 2020–2021 China–India skirmishes:
India 
Indian Army 
