The US Government says it takes the welfare of former soldiers seriously. But the Department of Veteran Affairs says it's not always easy finding those who need help.
Two mothers whose sons committed suicide a week apart last month are campaigning to raise awareness of their suicide.
In the United States, suicides in the military have claimed more lives than the fighting.
Soldier Liam Smith suffers terrible mental trauma. He believes the Taliban are in his wardrobe. He's even tried to carve off his face.