It may for us, time will tell.
But with no doubt it marked the apex of the Roman Empire, who had lost 10% of their ENTIRE ARMY at the Battle of the Teutoburg Forest on 9/11 two thousand years ago.
They pulled back behind the Rhine and then the inevitable shrinkage began. 400 years later… done deal.
Any applicability to today? Not really, except that decline (and advance) can happen a lot faster now.