Ian Woolstencroft’s review published on Letterboxd :
George C. Scott both stars in and directs this tale of revenge and does a pretty good job at both. The first half builds slowly as the army attempts to cover up a nerve gas leak that leaves Scott infected and his son dead. When he finally finds out the truth he goes on an explosive quest for payback. Scott does the angry, vengeful father bit to perfection, embodying the films title in his fiery performance. Richard Basehart makes the most of a small role as the family doctor and a very young Martin Sheen makes an appearance as an army doctor. There's a fatalistic air to the films finale that suits it perfectly, showing the futility of one man's rage against the establishment. It leaves you feeling angry, which was surely Scott's intention.