Divisions of Indian Army

One Indian division sailed to war in 1939, before India was even independent. This article covers how the Army’s divisions are organised, and the history some of them carry.

1Chapter 1: Where a Division Sits

Must Know

The basics

• A division sits between a Corps and a Brigade in the Army’s hierarchy.
• It holds three to four brigades and around 10,000 to 15,000 soldiers.
• A Major General commands each division.
• The wider structure is covered in Structure of Indian Army.

The five types

• Infantry, Mountain, Armoured, RAPID and Artillery divisions.
• Mountain divisions are trained and equipped for high-altitude terrain, especially along the Himalayan borders.
• Armoured divisions centre on tanks, built for fast offensive moves on open ground.
• RAPID divisions (Reorganised Army Plains Infantry Divisions) combine infantry, mechanised and artillery brigades for fast operations on the plains.

1939: the Red Eagle

• The 4th Infantry Division, “Red Eagle”, was formed in Egypt.
• In 1939 it became the first Indian formation sent overseas in the Second World War.
• The Army’s oldest active divisions still trace their identity to formations that fought in that war.
• Keeping the name “Red Eagle” across nearly a century shows how formations carry institutional memory.

2Chapter 2: Mountain Strike Corps and RAPID Divisions

Good to Know

Why a China-facing strike corps

• 17 Corps, the Mountain Strike Corps, was created to give India a dedicated offensive option along the northern border with China.
• The government sanctioned it on 17 July 2013, after border tensions with China.
• Face-offs at Depsang in Ladakh sharpened concerns about mountain-warfare readiness.
• 17 Corps was formally raised on 1 January 2014 in Ranchi, under Major General Raymond Joseph Noronha.
• The idea was first proposed around 2000, but only sanctioned in 2013.
• So border tensions, not just planning, often decide when big reforms happen.

Why RAPID divisions exist

• RAPID divisions came from India’s Cold Start doctrine, unveiled in 2004.
• Operation Parakram, a 2001–02 mobilisation, took nearly three weeks to move forces to the border.
• That slow pace exposed a gap in offensive readiness.
• Cold Start called for smaller, faster, combined-arms formations that strike before an adversary can fully respond.
• RAPID divisions put that idea into the Army’s actual structure.
• They show a deliberate shift toward faster, more mechanised warfare on the plains.

Different terrain, different design

• Distinct division types for mountains, plains and armoured warfare reflect India’s varied terrain.
• No single design could serve every border well.

3Chapter 3: Current Affairs

Current Affairs

17 Corps splits into Integrated Battle Groups

• In 2026, the government approved a long-pending plan to reorganise 17 Mountain Strike Corps into Integrated Battle Groups.
• An IBG combines infantry, armour, artillery and support units into one compact, self-contained formation.
• It is built to mobilise faster than a traditional division.
• 17 Corps is set to field five IBGs plus a Fire Support Group.
• Full IBG-isation is targeted around mid-2027, with wider rollout through 2029.
• (Source: ThePrint.)

Quick Q&A

• Division commander? Major General.
• RAPID stands for? Reorganised Army Plains Infantry Division.
• 17 Corps raised? 1 January 2014, Ranchi.
• Cold Start unveiled? 2004.
• First overseas formation? 4th Infantry Division, 1939.