Lost Fleet[1] has fleet combat often take seconds during passes at extreme relative velocities Honorverse[2], starting with second released book[3], introduced

Lost Fleet[1] has fleet combat often take seconds during passes at extreme relative velocities Honorverse[2], starting with second released book[3], introduced FTL comms in a world that until then could only detect certain events at FTL speeds - it's one of the main things that leads to very fast evolution of warfare in the sector of space which spills wider and wider. I think its take on impact on warfare seriously predates Vatta's War (still have to read Vatta's War, the first four novels in Familias Regnant universe were very good, have to one day get back and finish the series and take on Vatta's War). [1] https://en.wikipedia.org/wiki/The_Lost_Fleet https://en.wikipedia.org/wiki/The_Lost_Fleet [2] https://en.wikipedia.org/wiki/Honorverse https://en.wikipedia.org/wiki/Honorverse [3] https://en.wikipedia.org/wiki/The_Honor_of_the_Queen https://en.wikipedia.org/wiki/The_Honor_of_the_Queen