- 6 updates
Bruce Martin from the charity Talking 2 Minds, which specifically deals with soldiers suffering from post-traumatic stress disorder, said there is not enough awareness around the subject.
He told Daybreak he was "not in the slightest" bit surprised to hear that one in five men who return from the armed forces will be violent.
He said, "they don't have anywhere to go to at the moment really to help them."
Men under 30 who serve in the Armed Forces are more likely to commit a violent offence than their civilian counterparts, a report has found.
Former soldier Lewis McKay, who served in Afghanistan, told Daybreak that his personal relationships were affected when he returned to civilian life.
Speaking about his wife he said, "it got to the point that she didn't exist to me."
He added, "the smallest thing would infuriate me and it would make me want to lash out and hit my wife."
Martin Webster, a former soldier who now works as an emotional coach for servicemen, told ITV News that he was an "extremely dangerous individual" when he left the military.
He said he felt angry at the society he fought for and if it wasn't for the emotional coaching he was given he wouldn't have "turned his life around" as he now has.
He now works with soldiers who have been in trouble with the law and with drug addiction since leaving the military.
Study leader Dr Deirdre MacManus, from King's College London, said:
In the biggest study of its kind ever undertaken, researchers were given access to police records on almost 14,000 randomly selected men and women who were active or former members of the armed forces, mostly the Army.
Participants provided information about their experiences before and after joining the military and underwent psychological tests.
A search of the Police National Computer was made for any convictions, cautions or warnings relating to the study population.
Overall, 17% of the men had criminal records, and 11% had committed violent offences.Of the 2,728 aged 30 and younger, 20.6% had a criminal record for violence.
Young British men are much more likely to commit violent crimes if they have served in the armed forces, a study by Kings College London has found.
- Of around 3,000 military men under the age of 30, more than a fifth had a conviction for violent offences, compared with 6.7% of their civvie street peers.
There were strong links between combat experience, post-deployment alcohol misuse, traumatic stress and violence.
- Men who had seen combat in Iraq and Afghanistan were 53% more likely to commit a violent offence than comrades given non-combat roles.
- Those with multiple experiences of combat had a 70% to 80% greater risk of committing acts of violence.
Professor Sir Simon Wessely, who co-authored the study, said 94% of those who serve in combat will not offend: "We are suggesting there is a problem that needs to be looked at, but just as with post traumatic stress disorder this is not a common outcome in military populations."