Data from the United States Army shows that 40 percent of current military service members have been deployed more than once, and one in eight have been deployed three or more times. A study by the Army Surgeon General's Mental Health Advisory team found a significant increase in mental health problems in male noncommissioned Army officers who had more deployments. Of those who were deployed once, 12 percent had depression, anxiety or acute stress. The figure increased to 27 percent for those who were deployed three or four times.