I'm going to guess you didn't even bother googleing this? Anyways from the Norwegian embassy in South Korea's official page "The Korean War started June 25, 1950. Accordingly, the United Nation’s Security Council responded quickly, calling for its members to come to South Korea’s assistance. Norway was in favor of the UN resolution and wanted to support South Korea. Consequently, discussions started on how to provide practical help. After a request from the Norwegian Foreign Ministry, the Norwegian Red Cross presented a suggestion for aiding the Korean civilians, especially the increasing number of refugees. There was, however, a more urgent need of a mobile surgical hospital to help the UN forces in Korea. Thus the Norwegian Red Cross prepared a plan for operating such a hospital. The Norwegian Storting passed a resolution approving this plan March 2, 1951. A month later, the necessary funds were granted."

Here's the source http://www.norway.or.kr/News_and_events/Norway-Korea-Relations/medical/koreanwar/#.V0OTqvROLCQ