This Is What Became Of The Native American Who Helped Hoist The Flag On Iwo Jima: https://www.youtube.com/watch?v=SrvDCJQQXWg (around 7:00 minutes long).
I first learned of Ira Hayes through Johnny Cash‘s Ballad of Ira Hayes (see YouTube link below; runs about 4:10 minutes or so in length).
Ballad of Ira Hayes by Johnny Cash – various YouTube videos: https://www.youtube.com/results?search_query=ballad+of+ira+hayes
Here’s his Find-A-Grave memorial: https://www.findagrave.com/memorial/463/ira-hamilton-hayes.
BillionGraves record: https://billiongraves.com/grave/IRA-HAMILTON-HAYES/23381304.