Conversation so far:
What was Ira Hayes doing after the War?
Hayes attempted to lead a normal civilian life after the war.
Did he have a family?
CANNOTANSWER.
Is there something notable that he does after the war?
Hayes walked and hitchhiked 1,300 miles from the Gila River Indian Community in Arizona to Edward Frederick Block, Sr.'s farm in Weslaco, Texas, to reveal the truth.

Question: What truth is he wanting to reveal?
Self-contained rewrite: What truth did Ira Hayes share with Fredrick Block?