An interesting parallel to the Air Force's SAGE was the Navy's NTDS, Naval Tactical Data System. It had to do much the same as SAGE, with target correlation and

An interesting parallel to the Air Force's SAGE was the Navy's NTDS, Naval Tactical Data System. It had to do much the same as SAGE, with target correlation and the like, and had to do it from moving ships (and later with the E-2 Hawkeye Airborne Tactical Data System from planes as well). Purely military, and I can't tell that many of its developments ever ended up in civilian society like elements of SAGE did, but it's remarkable just how much they could do with the technology of the time. The best source I've seen about NTDS itself is https://ethw.org/First-Hand:No_Damned_Computer_is_Going_to_Tell_Me_What_to_DO_-_The_Story_of_the_Naval_Tactical_Data_System,_NTDS https://ethw.org/First-Hand:No_Damned_Computer_is_Going_to_T... while Norman Friedman's book _Fighters Over the Fleet_ talks about the fighter control context around NTDS, like what the system was before NTDS, the factors that caused the previous system to break down, and parallel British efforts at the same problem