Michael O'Neill

 portrayed Arliss Price, a retired military veteran who tells Jake Epping about his experiences in the Second World War.

Michael O'Neill is an American actor who (as of 2016) has appeared in three films that were nominated for the Best Picture Oscar: "Traffic" (2000), "Seabiscuit" (2003) and "Dallas Buyers Club" (2013).

Source
Michael O'Neill on the Internet Movie Database. Retrieved on April 13, 2019.