Not new, but I know some folks have an interest in Bronze Age warfare (https://www.academia.edu/353670/The_Emergence_of_Warrior_Aristocracies_in_later_European_Prehistory).
Good article, thanks for sharing it. I think most of it is in line with current informed thinking. The stuff on size and interaction of polities on page 184 is well worth reading for anyone interested in that sort of thing.