; Whereas the 45th Infantry Division Thunderbirds — (1) deployed to South Korea in 1952; (2) was 1 of only 2 National Guard divisions to see combat in the Korean War; (3) was deployed with I Corps and participated in such battles as Old Baldy and Pork Chop Hill; and (4) participated in 4 campaigns during 429 days in battle; Whereas, during the Cold War, the 4th Battalion 31st Infantry Polar Bears was activated at Fort Sill to help train artillerymen in joint-combat tactics; Whereas, although the Polar Bears unit was called infantry , it was a unique combined-arms team that included an armored tank company; Whereas the high-profile Polar Bears unit participated in combined-arms live-fire exercises (the CALFEX program ), which brought together infantry, armor, field artillery, and Air Force assets; Whereas the CALFEX program was brought to an end by the drive for efficient use of money, with the end of the Polar Bears unit signaling the end of the high-profile CALFEX program; Whereas, as of 2019, the Polar Bears unit has been reactivated with the 10th Mountain Division at Fort Drum, New York; Whereas, in 1963, the Field Artillery School tested aerial rocket artillery, which equipped helicopters with rockets; Whereas, as demonstrated during the Vietnam War, aerial rocket artillery was effective; Whereas the Field Artillery School cooperated in the development of the Field Artillery Digital Automated Computer, which was introduced in 1966 to compute fire direction data and made the Field Artillery a leader in computer developments for the Army; Whereas, in 1963, the 1st Aerial Artillery Group (Provisional) was organized at Fort Sill to test equipping CH–34 helicopters with rocket pods attached to each side, converting the transport aircraft, an easy target in most combat situations, into flying weapons capable of direct or indirect fires; Whereas modern helicopter gunships are descendants of the 1963 test program at Fort Sill