Going to war does not have to hurt: preliminary findings from the British deployment to Iraq.

We carried out a brief longitudinal mental health screen of 254 members of the UK's Air Assault Brigade before and after deployment to Iraq last year. Analysis of General Health Questionnaire (GHQ-28) scores before and after deployment revealed a lower score after deployment (mean difference=0.93, 95% CI 0.35-1.52). This indicated a highly significant relative improvement in mental health (P < 0.005). Moreover, only 9 of a larger sample of 421 (2%) exceeded cut-off criteria on the Trauma Screening Questionnaire. These findings suggest that war is not necessarily bad for psychological health.