The Going Up of David Lev (1973)

A ten-year-old Israeli boy whose father died years earlier during the Six-Day-War is determined to find out more about his father's death. He skips school and, with the help of a friendly cab driver, heads to Jerusalem to find the men who fought with his father's unit and learn the exact circumstances. During the drive from Tel Aviv to Jerusalem, the cabbie provides a history of the establishment of the Jewish state

Unfortunately the movie The Going Up of David Lev is not yet available on HBO Max.