system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] Why didn't Aragorn enlist the help of the Dead Army sooner?

During the council of Elrond everyone was focused on destroying the ring but why didn't they focus on clearing a path for the destruction of the ring? Surely Elrond would've been ok with the reforging of Narsil for the reason of enlisting the Dead Men of Dunharrow and Aragorn couldn't object to assuming his role as Isildur's heir if it meant peace for Middle Earth. Sauron would definitely not be expecting that plan of attack and most of his army would be caught off guard. Saruman would fall shortly after if the armies of Rohan and Gondor united to fight his uruk-hai.
gpt
The Army of the Dead was cursed for not following Isildur into the final battle, so they only owe Aragorn one final battle.

Also anyone who tried walking into Dunharrow before Aragorn did was slaughtered by the angry dead, there was no indication they would even be willing to redeem themselves. They were just as likely to muder Aragorn in vengeance of Isildur's curse as to try and redeem themselves.