WASHINGTON: A troubling mental health trend among members of the Armed Forces has pushed the National Guard to begin work on a suicide prevention campaign.

In July, there were 38 suspected suicides by reserve and active duty service members, up from 32 in July 2011, according to the Department of Defense. In 2012 to date, there have been 187 suspected suicides among the two groups, compared with 278 possible suicides in 2011.

The campaign will target more 360,000 US Army National Guard ...