Shortly after the German attack on Norway on 9 April 1940 he traveled to Åndalsnes to join his regiment. He had previously attained the rank of Lieutenant (in the reserve forces), and was also one of the first Norwegians to obtain a pilot's licence. When British troops landed at Åndalsnes from 17 April, Linge became liaison officer between the local regiment and the British. Åndalsnes (and other towns in Møre og Romsdal county) was at this time still unoccupied territory and the only port with railway connections to the East Norway and the campaign there. The King, the crown prince, the cabinet, Norway's gold and cash holdings, and finally general Otto Ruge with staff, escaped through Åndalsnes. Trygve Lie in his memoirs recalls meeting Linge at Åndalsnes. During German air bombing of a makeshift airfield at Setnesmoen, he was wounded and evacuated by boat to Britain. He was the first wounded Norwegian soldier to arrive in Britain.