Reactivated on 8 September 1955 by Air Defense Command (ADC) at Truax Field, Wisconsin under Eastern Air Defense Force.
Was responsible for the construction and development of several Semi Automatic Ground Environment (SAGE) Data Centers.
 SAGE centers developed were at Truax Field, Wisconsin (DC-07) and Combat Center (CC-02); Direction Center (DC-10) at Duluth Municipal Airport, Minnesota; and Direction Center (DC-14) at K.I. Sawyer Air Force Base, Michigan.
 Its defense area included parts of Wisconsin, Michigan, Minnesota, Illinois, Indiana, Missouri, Iowa and southern parts of Ontario, Canada as part of the Pinetree Line.

On 8 March 1957, the Chicago Air Defense Sector, along with DC-07 and was assigned to the Division.
 On 8 October, the Duluth Air Defense Sector, along with DC-10 was assigned.
On 8 November, the Sault Sainte Marie Air Defense Sector was also activated along with DC-14.
Inactivated on 1 April 1959 as part of an ADC reorganization, most assets reassigned to the senior ADC 30th Air Division (SAGE).

Reactivated by ADC a second time in April 1966, assuming the assets of inactivating Goose Air Defense Sector at Goose Air Force Base, Labrador, Canada, including the Manual Control Center (MCC) at Goose.
 Assumed designation of 37th NORAD Region for stations and allied Canadian Forces assigned to NORAD air defense duties in Canada.

Was responsible for atmospheric defenses (interceptor and radar) for northeastern North America, including Greenland and Air Forces Iceland which was transferred from Military Air Transport Service.

Inactivated June 1970 by ADCOM as part of draw-down of USAF air defense forces in Canada and budget reductions, remaining assets in Canada transferred to Canadian Forces.
Reactivated on 8 September 1955 by Air Defense Command (ADC) at Truax Field, Wisconsin under Eastern Air Defense Force. Was responsible for the construction and development of several Semi Automatic Ground Environment (SAGE) Data Centers.  SAGE centers developed were at Truax Field, Wisconsin (DC-07) and Combat Center (CC-02); Direction Center (DC-10) at Duluth Municipal Airport, Minnesota; and Direction Center (DC-14) at K.I. Sawyer Air Force Base, Michigan.  Its defense area included parts of Wisconsin, Michigan, Minnesota, Illinois, Indiana, Missouri, Iowa and southern parts of Ontario, Canada as part of the Pinetree Line.
On 8 March 1957, the Chicago Air Defense Sector, along with DC-07 and was assigned to the Division.  On 8 October, the Duluth Air Defense Sector, along with DC-10 was assigned. On 8 November, the Sault Sainte Marie Air Defense Sector was also activated along with DC-14. Inactivated on 1 April 1959 as part of an ADC reorganization, most assets reassigned to the senior ADC 30th Air Division (SAGE).
Reactivated by ADC a second time in April 1966, assuming the assets of inactivating Goose Air Defense Sector at Goose Air Force Base, Labrador, Canada, including the Manual Control Center (MCC) at Goose.  Assumed designation of 37th NORAD Region for stations and allied Canadian Forces assigned to NORAD air defense duties in Canada.
Was responsible for atmospheric defenses (interceptor and radar) for northeastern North America, including Greenland and Air Forces Iceland which was transferred from Military Air Transport Service.
Inactivated June 1970 by ADCOM as part of draw-down of USAF air defense forces in Canada and budget reductions, remaining assets in Canada transferred to Canadian Forces.
37th Air Division