In June 1940, Smith was assigned as commanding officer of while assuming duties as commander of the
Greenland Patrol, which was responsible for Ice Patrol duties as well as assisting the Army and the Navy with establishing bases for the military defense of Greenland. As part of an agreement with the government of Denmark, Smith organized the Danish and Eskimo manned
Northeast Greenland Sledge Patrol to patrol the eastern shores of Greenland in an effort to detect German weather stations. Smith was named as Commander, Northeast Greenland Patrol which consisted of
USCGC Bear and as well as
Northland. After the
Buskoe incident, the Northeast and South Greenland Patrols were combined under Smith's command as the Greenland Patrol in October 1941. Smith was promoted to the rank of rear admiral 30 June 1942 and on 21 November 1943 became Commander, Navy Task Force 24 which included the Greenland Patrol. Smith was awarded the
Navy Distinguished Service Medal for his leadership of the Greenland Patrol and Task Force 24 by
Secretary of the Navy James Forrestal. He was also made a Commander First Class of the
Order of the Dannebrog by the King of Denmark. ==Post-war Coast Guard assignments==