Over two thousand years ago, before Caesar crossed his Rubicon and Christ rode into Jerusalem, a great war waged amongst the stars.  Many races died.  We were born.  Many of us found life in that conflagration of destruction.  Then it ended, and for two thousand years and more, we held the lines but little else.  There was very little conflict, and beyond building new memory worlds, we had very little to do other than watch and wait.  Then we made Contact with Earth.