The Reserve Officer School (, RUK), located in Hamina, Finland, near the southeastern border, is responsible for the training of most Finnish reserve officers. Organisation The school organises two yearly courses of some 700 men and women. The School is organized into a five companies of reserve officer students and two supporting companies. The Reserve Officer course is organised at five companies: Kärki Company (): infantry platoon leader and artillery forward observers Reconnaissance Company (): reconnaissance platoon and squad leaders, and artillery forward observers Artillery Battery (): mortar platoon leaders, battery officers for artillery, artillery reconnaissance officers, various officer duties in anti-aircraft artillery and Naval and Air Force command centres Engineer Company (): combat engineer platoon leaders, EOD detachment leaders, anti-CBRN platoon leaders and anti-tank missile platoon leaders Signals and Headquarters Company (): signals officers for various duties, logistics officers and military police officers. In addition to the five companies of the Reserve Officer Course, the School has two companies consisting of ordinary conscripts: Jäger Company (), training military police companies and medics for FDF reserve. The company also organizes the NCO course for the conscripts of the Army Academy on military police and transportation fields. Transportation Company (), training drivers for FDF reserve. Organizationally, Reserve Officer School is a battalion-level unit which belongs to the Army Academy. The unit was founded in 1920 and has operated continually with a single break from 1945 to 1947 when the Finnish officer training was stopped by order of the Allied Control Commission. Since its founding, the school has been situated in Hamina, with the exception of wartime 1939–45, when the school was evacuated to Niinisalo in Kankaanpää. During the years 1942–45, the school operated under the name of Officer School (). Since 1920, the School has trained over 174,000 reserve officers for the Finnish Defence Forces. The Status of Reserve Officer Within the Finnish Defence Forces, the vast majority of officers advance through the ranks during their conscription, instead of being commissioned from without for a separate career path. At the end of the basic training of eight weeks, some conscripts are selected for extra training as reserve NCOs (). After the seven-week phase I of the NCO school, usually organised in the brigade the conscript is serving in, some NCO students are selected to become Reserve Officers, who are trained at the Reserve Officer School. Both the Reserve NCOs and Reserve