Charity Combat Stress said 358 ex-military personnel sought help for mental illness last year, compared with 228 in 2012.
The majority of those veterans were treated for post traumatic stress disorder, depression or anxiety.
The charity's chief executive, Commodore Andrew Cameron, warned that the numbers are likely to increase over the coming years.
"With demand for our services already surging, Combat Stress faces a real challenge in continuing to provide our unique life changing clinical treatment and support services to those who need it," he said.
"We are planning for services at or above the current level for at least the next five years, and we do not expect to see demand for support tail-off in the near future."
Commodore Cameron said one fifth of all veterans are likely to suffer from mental illness......
[via - news.sky.com]