The only published account to date of psychiatric complications among Falklands war veterans suggests that acute reactions are rare. Reported here are three cases of severe delayed reactions in Falklands veterans from South Wales. All three cases demonstrate a common pattern similar to that shown by Vietnam war veterans. Possible aetiological factors and prevention are discussed. It seems likely that relatives of combatants will also be affected and general practitioners are in a unique position to recognize and treat these problems.