Combat Experience and the Acquired Capability for Suicide

A startling surge in suicide rates among US service members since the initiation of combat operations in Iraq and Afghanistan spawned renewed interest in the association between combat exposure and suicide among scientists, practitioners, and policymakers. An ever-growing discourse of theoretically and empirically derived mediators and moderators provides a basis from which to clarify the potential link between combat engagement and suicide. This chapter focuses on one potential intermediary, namely the acquired capability for suicide, as proposed by the interpersonal-psychological theory of suicide (IPTS). According to the IPTS model, acquired capability for suicide is necessary in order for one to engage in suicidal behavior, as is perceived burdensomeness and thwarted belongingness. Data suggest that combat exposure and military training may enhance one’s capability for self-harm. The relevance of acquired capability for suicide within military populations, as well as potential avenues for intervention, are discussed.