The Singapore Army originated with two infantry battalions, the 1st and 2nd Battalions, Singapore Infantry Regiment (1 SIR and 2 SIR), which were respectively formed in 1957 and 1962 when Singapore was still a British colony. After a merger with Malaysia which resulted in separation in 1965, Singapore passed the Singapore Army Bill in Parliament on 23 December 1965 and gained complete control of the two battalions from Malaysia in January 1966. At the time, the Singapore Army had only the two infantry battalions and the old Singapore Volunteer Artillery Corps. Months later, the Army had a reserve force, the People's Defence Force, which was formed from an old volunteer unit mobilised for service during the Indonesia–Malaysia confrontation. A third battalion, the 10th Battalion, People's Defence Force (10 PDF), was raised as a volunteer infantry reserve battalion. In 1967, Parliament passed the National Service (Amendment) Act, introducing National Service (conscription) for all able-bodied young men aged 18 and above. In June 1967, the Singapore Army introduced its first artillery battalion, the 20th Singapore Artillery Battalion (20 SAB). Two new infantry battalions, the 3rd and 4th Battalions, Singapore Infantry Regiment (3 SIR and 4 SIR) were formed in August 1967. In November 1968, the Singapore Army's first armoured battalion, 41st Battalion, Singapore Armoured Regiment (41 SAR), was formed. This was followed by the creation of the 1st Commando Battalion (1 Cdo Bn) in December 1969. In 1972, Parliament passed the Singapore Armed Forces Act to reorganise and consolidate the Singapore Armed Forces' disparate commands and administrative functions. Description of Logo The emblem's escutcheon reads "Tentera Singapura" (meaning "Singapore Army" in Malay). The national coat of arms sits in its interior. The motto is "Yang Pertama Dan Utama" ("first and foremost" in Malay). Two stalks of laurel flank the escutcheon. The laurels are green for the Singapore Army and gold for the Singapore Armed Forces. Operations The Singapore Army has participated in peacekeeping operations overseas. In the aftermath of the Gulf War, Singapore contributed to the United Nations Iraq–Kuwait Observation Mission (UNIKOM) formed in 1991. From May 2007 to June 2013, the Singapore Army deployed about 500 personnel to join the International Security Assistance Force (ISAF) in maintaining stability and assist in reconstruction in war-torn Afghanistan. Since 2014, the Singapore Army has provided logistical support to the international coalition in the War against the Islamic State. List of chiefs of Army Organisation