I'll use some of the experiences that I know about.
There were many veterans who left the Canadian Armed Forces prior to Afghanistan because they were suffering, and they left voluntarily because they didn't know what they had. OSI was not accepted; OSI was not in the forefront, so they left the military not knowing exactly what they were suffering from. Some did and some didn't. We had a lot of people who left the military voluntarily because they just didn't know what was going on anymore, and they couldn't continue to meet the physical requirements of being in the military.