[note 4][3][4][5] Following the conclusion of the Indonesia-Malaysia confrontation in 1966, the army command contemplated disbanding the Malaysian Special Service Unit (MSSU).

The MSSU, stationed at Sebatang Karah Camp in Negeri Sembilan, was a task force whose members were all commando-trained but belonged to their respective regiments or corps, including some sailors from the Royal Malaysian Navy.

[4][6] In 1969, the 13 May incident occurred, leading to the MSSU's deployment to Kuala Lumpur to safeguard the weapon depot within Mindef Camp (Malay: Kem Kementah).

The MSSU also collaborated with the Royal Malaysia Police's Special Branch to apprehend leaders of gangs and triads who had played a role in the racial tensions behind the scenes during the incident.

: 11 ULK), or the 11th Counter Terrorism Unit in English, its duties encompass counter-terrorism, hostage rescue, close protection, and special reconnaissance.

Specialising in traditional special forces roles, the 21 CDO distinguishes itself by emphasising airborne operations, in contrast to the 22nd Commando Regiment.

Merging service support companies from the 21 SSG created the 21 Kump Log, resulting in three squadrons: Its duties include supplying special operations combat medics and delivering medical care to all special forces members and their families at army camps occupied by the 21 SSG.

[11] The insignia, alternatively referred to as a tactical formation patch (Malay: Lencana formasi taktikal), is affixed to the combat uniform and bears olive and black colours.

The 21 SSG shoulder sleeve insignia closely resembles the beret backing but incorporates a distinct black outline.

This current design draws inspiration from the insignia of the Malaysian Special Service Unit, featuring a striking depiction of a roaring tiger's head with a commando dagger at the centre.

[12] Members of the 21 SSG don the number 3 uniform (work dress) paired with a green and light blue stable belt.

Out of these 22 individuals, 17 have held the position of the Commander of the 21st Special Service Group (Malay: Panglima 21 Gerup Gerak Khas), which was created after 1981.