The Indonesian Army has formed a large number of infantry battalions since it was formed from provisional militias during the Indonesian National Revolution against the Dutch colonial rule, 1945–1949. Today, the International Institute for Strategic Studies' Military Balance 2007 lists the Army with 2 brigades (6 battalions) plus 60 other battalions in the KODAMs, or Military Regional Commands, and nine battalions in KOSTRAD, the Army Strategic Reserve Command.^[1] There are also around nine airborne battalions.

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Indonesian military units are commonly referred to by compound words. Infantry battalions are routinely called as Yonifs which is a portmanteau from "batalyon infanteri" ('infantry battalion'). They are also commonly referred to by their battalion nicknames, for example: 511th Infantry Battalion - "Dibyatama Yudha".

The Infantry Branch is the principal and major unit of the Indonesian army combat element. The Infantry element is the largest and main combat troops within the Indonesian army. Kostrad and Kopassus are all part of this branch although it also consists of non-infantry units internally. In Indonesia, there are more than 100 Infantry Battalions spread throughout the country. Green berets are worn by Indonesian Army infantrymen. The Infantry Branch of the Indonesian Army are under the auspices of the Infantry Branch Centre ("Pussenif") which is under the command of a Lieutenant general. The Infantry branch of the Indonesian Army consists of huge numbers of units whereas the International Institute for Strategic Studies' Military Balance 2007 lists the Army with 2 brigades, (6 battalions), plus 60 other battalions in each Military districts ("Kodam") and nine battalions in Kostrad.^[1]

The elite infantry battalions of the Indonesian Army are called "Raider Battalions" (raised on 2003) which are specially trained in Raid and Air assault operations (including counter-terrorism, Extraction, Guerrilla and Close combat operations).^[2] By strength and capabilities, 1 battalion of Raider infantry is equal to 3 regular infantry battalions combined. There are currently about 49 raider battalions in the Indonesian Army Infantry branch, with the strength of 650 to 800 men per-battalion. It is larger compared to regular infantry battalions which only consists about 450 to 570 infantrymen. Even as the Chief of Staff of the Army (Kasad) is planning in the future to qualify all Infantry battalions (except mechanized) as "Raider"-ready,^[2] there are now mechanized battalions which are "Raider"-qualified in addition to their mechanized role. Infantry battalions in the Indonesian Army originates from different combat organisations or corps, there are several infantry battalions part of Kostrad and some are part of the territorial military commands (Kodams), the same case also falls to Raider Infantry battalions. Currently, there are now 3 Airborne infantry brigades in the Indonesian Army which are all "Raider" qualified (called as: Para-raider), and are all part of the Kostrad. The Infantry beret colors of the Indonesian army are as shown below:

• Regular Infantry soldiers wear: Light Green Beret with crossed-rifle insignia
• Kostrad infantrymen wear: Dark Green Beret with Kostrad emblem, (Airborne units are added a paratrooper wing insignia on the beret)
• Raider infantrymen wear: Dark Green beret with bayonet emblem
• Mechanized Infantrymen wear: Dark Green beret with Mechanized Infantry emblem

There are today 5 types of Infantry battalions in the Indonesian Army, which are:

1. Parachute-Raider Infantry Battalion (abbreviated "Yonif Para Raider"): are Airborne infantry battalions part of Kostrad which are able in Air assault and Raid operations.
2. Mechanized-Raider Infantry Battalion (abbreviated "Yonif Mekanis Raider"): are Raider infantry battalions which are Mechanized that are special operations-capaable which also can carry out urban warfare and ground mechanized-infantry operations.
3. Raider Infantry Battalion (abbreviated "Yonif Raider"): are infantry battalions which are basically trained for Raid warfare and Air assault operations.
4. Mechanized Infantry Battalion (abbreviated "Yonif Mekanis"): are mobilized infantry battalions, equipped with APCs and IFVs.
5. Infantry Battalion (abbreviated "Yonif"): are light Infantry battalions.

All infantrymen of the Indonesian National Armed Forces (TNI), the Army included, have capabilities in Jungle warfare.

In the Indonesian Army, the Raider Infantry (In Indonesia known as Yonif Raider) is a type of specialized-infantry above of regular infantry which are trained to conduct Raids, military extraction (hostage rescue), counter-terrorist, airborne, Guerrilla and Air assault operations. It also is trained to conduct urban and jungle warfare.^[3] The first ten battalions of the raider infantry which were inaugurated on December 22, 2003, were formed by transforming 8 battalions of territorial commands and 2 Kostrad battalions. As a counterweight force, the strength of a Raider Infantry Battalion (Yonif Raider) is equivalent to three times the strength of an ordinary/regular infantry battalion (Yonif) in the Army. This infantry unit is back grounded with "Raid" battle tactics known as "Depredation".

Each Raider battalion consists of approximately 810 personnel of all ranks, larger than the normal battalions of around 570 infantrymen. These personnel were given special education and training for six months for modern warfare, guerrilla and anti-guerrilla warfare, and protracted warfare tactics and strategies. Each of these battalions is trained to have triple combat capabilities of ordinary infantry battalions (Yonifs). Raider infantrymen are trained to perform ambushes, airborne and air assault operations, such as foray from helicopters and transport aircraft, while Raider infantrymen in the mechanized battalions are also trained in mechanized and urban warfare operations. 50 personnel each in a Raider battalion are Counter-terrorism qualified with other additional specialized skills. The Kopassus Special Forces Education and Training Center ("Pusdikpassus") located in Batujajar, West Java is where Raider infantrymen get their advance special operations training before being stationed to their respective Raider battalions. Aside from the Raider battalions, the Indonesian Army also fosters "Para-Raider" battalions which are Raider infantry units qualified as Airborne which all are within the Kostrad corps. There are also Raider infantry battalions which are Mechanised (Mekanis Raider) in the Army, the units are the 411th, 412th, and 413th Mechanized-Raider Infantry Battalions which are part of the 6th Infantry Brigade, 2nd Kostrad Infantry Division and the 113th Raider Infantry Battalion (Mechanized) from the 25th Infantry Brigade, Kodam Iskandar Muda.

• 1st Kostrad Infantry Division
• 2nd Kostrad Infantry Division
• 3rd Kostrad Infantry Division