Ok, I'm a little confused now.
So Dagor Dagorath became the War of the Wrath, in which Túrin returns incarnated, and with his black sword slays Ancalagon? And the Armageddon is what is told in the account of QS? Then Túrin is supposed to come back in the War of the Wrath, die again, return again at the end of the days, and slay Morgoth?? And the Armageddon prophecy was not declared
by Mandos??
I'm baffled.