According to data, the military occupation with the highest number of suicides is French horn player.

Researchers in the pentagon have been doing research into military suicide in the U.S. Army. In particular, they have been looking into the prevalence of suicide in different occupations within the military. Unfortunately, though the study looks at some interesting data, the reporters of the data have come to the conclusion that there isn’t enough to come to any distinct conclusion. 

What they have said is that they are continuing to work to figure out how to prevent suicides in different occupations. It is a very serious issue, and even though there are no clear conclusions from the research, there is always the opportunity to try and prevent the tragedy of suicide. 

The rate of suicides isn’t high enough to draw any conclusion on one occupation versus the other because just one suicide skews the data. However, the job that has had the most suicides is the job of the French horn player. The job with the second most suicides is interior electrician and the job with the third most is information services chief. Interesting, but like the researchers said, not conclusive. 

(Source)