General Westberg was born June 23, 1920, in Menasha, Wisconsin, graduated from Menasha High School in 1938, and later attended the University of Omaha.
World War II
He enlisted in September 1942 in the United States Army Air Corps and entered civilian pilot training and the aviation cadet program. He graduated in November 1943 with a commission as second lieutenant and his pilot wings. He then received training as a bomber pilot at Maxwell Field, Alabama; Charleston, South Carolina; and Langley Field, Virginia. Westberg served from June 1944 to April 1945 with the Fifteenth Air Force in Italy and flew 35 combat missions in B-24 Liberator bombers.
He flew 27 combat missions in B-29s in 1950 during the Korean War with the United Nations Forces in Korea. He served from October 1954 to August 1957 at March Air Force Base, California, in staff and command positions, flying B-47 Stratojets with the 22d and 320th Bombardment Wings. He then became base commander of Davis-Monthan Air Force Base, Arizona, a position he held until October 1958. General Westberg next served at Strategic Air Command headquarters at Omaha, Nebraska, as deputy chief of the Command Control Division. In January 1962 he was transferred to Washington, D.C., where he served as Chief, Operations Division, and later as Deputy Chief, Joint Alternate Command Element, in the organization of the Joint Chiefs of Staff. He served at Hahn Air Base, Germany, from September 1963 to June 1965 and flew F-100 Super Sabre aircraft with the 50th Tactical Fighter Wing as deputy commander for operations and later vice commander. He then served at Incirlik Air Base, Turkey, from June 1965 to August 1966 as commander of The United States Logistic Group Detachment 10 and flew F-105 and F-100 aircraft with Tactical Air Command rotational units. After graduation from the National War College in August 1967, General Westberg served at Shaw Air Force Base, South Carolina, as commander of the 363d Tactical Reconnaissance Wing, and was an RF-4C Phantom pilot.
Vietnam War
He was transferred in July 1968 to the Republic of Vietnam, where he commanded the 460th Tactical Reconnaissance Wing at Tan Son Nhut Airfield. Later he became chief of staff of the Seventh Air Force. During his Vietnam tour of duty, he flew 600 hours and a total of 240 combat missions in the RF-4C reconnaissance aircraft. He moved to Hawaii in August 1969 to become Deputy Assistant Chief of Staff for Operations, Pacific Command.