Don McCullin is best known for the unwavering gaze of his war photography.

For thirty years he traveled to places most people run from, depicting horror unflinchingly and with enormous compassion for the people he captured in unimaginable situations.

Considered one of the greatest war photographers, McCullin's pictures chart conflicts in Vietnam, Bangladesh, the Congo, El Salvador, Biafra, Cambodia and the Middle East, including the Six-Day War in June 1967.

McCullin came away having taken some of the most powerful photographs of his career -- but he was left suffering combat stress, much like the soldier in his photograph.....