The Rejimen Askar Wataniah (Territorial Army Regiment) is the military reserve force of the Malaysian Army. The Regiment infantry units formerly consisted of 2 series of reservist; the mobilised 300 series and the volunteer 500 series. The 300 series, which consisted of 5 infantry battalions, with mobilised reservists for full-time duty, have since 2008 been converted into a new regular border regiment, the Rejimen Sempadan. The 500 series are reserve volunteers units, based in major towns and cities throughout the whole country. In all there are about sixteen 500 series infantry battalions, in addition to other support and service support reserve units.