Shoot (1976)

When boredom, pride and a mad second of misjudgement leaves a hunter shot dead by one of five combat veterans also hunting in the Canadian hills, it is expected a police investigation will follow, but when the veterans discover the incident has not been reported, the leader of the team, Major Rex (Cliff Robertson) suspects the other party maybe plotting revenge. Convinced that he, his party, and their families will be targets themselves he decides to beat his suspected assailants at their own game, grouping together more army comrades and stocking up an arsenal of weapons for the forthcoming battle.