Two brigades, one in Surabaya to support the eastern fleet, and one in Jakarta to support western fleet. Each has its own calvary, air defense, and artillery battalions
Tanks and APCs: 40 x PT-76/2000 light tanks; 90 x AMX-10 PAC 90; 19 x AMX-10P armored personnel carriers; 30 x BMP-1A; some BMP-2; 10 x BMP-3 (on order?); 75 x BTR-50P; BTR-80 (on order)
Towed artillery: 122mm: 40 x M-38, MRL: 140mm: BM-14
Others: 40mm, 57mm, 4000 x SA-7 (not all are operable), rocket launchers.
These articles below were taken from Specialoperations.com
Kopaska was formed on March 31 1962 by President Sukarno to help his campaign in Irian Jaya. In that campaign they were ordered to be human torpedoes similar to Japanese 'kamikaze' troops. In doing so they rode the torpedo, guided it until hit the enemy's ship. KOPASKA is heavily influenced by the early U.S. Navy Underrwater Demoliton Teams (UDT) and modern Navy SEAL Teams. This foundation was built when early KOPASKA members were sent to the United States for training with the UDTs. That tradition continues today as each year a few men from the unit travel to Coronado, California and Norfolk, Virginia to participate in SEAL training.
Today, unit strength is approximately 300 men, divided into two groups. One is attached to western fleet, based on Jakarta and the other one is attached to eastern fleet, based on Surabaya, East Java. Their main duty is underwater demolition which consists of raiding enemy's ships and bases, destroying main underwater installations, beach reconnaissance, prisoner snatches, and preparing beaches for larger naval amphibious operations. In peace time the unit deployes seven man teams to serve as security personnel for VIPs. Primary among these duties are the escort and personal security of the Indonesian president and vice president. They are also responsible for limited search-and-rescue duties and have deployed as part of United Nations peace forces.
Recruitment for the unit is held once a year and draws exclusively on navy personnel (not from the marines). The maximum age of recruits are no more than 30 years. The length of recruitment is seven months. Usually from 700-1500 men who signed up only 15-20 men will pass the initial selection. After the selection the men who pass will undergo four-phase continual training. The first phase of this is one week of physical training (Hell Week), the second phase is basic underwater training, the third phase is commando training, and the fourth phase is parachute training. In the end from 15-20 men, usually only five or six make it and become Kopaska.
This unit is a combat swimmer unit dedicated to counterterrorist operations at naval installations and others offshore such as hijacked shipping or oil platforms. Recruits are drawn, from the Marine Corps UDT and Amphibious Reconnaissance units. and reportedly undergo limited hostage rescue training. It was established circa 1982 and has a strength of over 250 men. They are organized into combat teams of 24 men each, subdivided into three teams with a leader element. Satgas Gurita is based at the port of Jakarta, Indonesia.