Transitioning out of military service can be stressful and challenging. This study examined gambling problems and help-seeking among Australian veterans. The study also considered trauma and posttraumatic mental health issues among veterans with gambling problems. The researchers used survey responses from 3,511 Australian Defence Force members who left the military within the past five years. A total of 13.4% experienced gambling problems, with 4.6% having problem gambling. Time since leaving the military was not linked to gambling problems. Only 2.1% of veterans with problem gambling sought help. Trauma exposure, depression, and PTSD were linked to at-risk and problem gambling. But only depression and posttraumatic arousal affect were associated with gambling problems after taking into account all these risk factors. Posttraumatic mental health problems might explain the link between trauma and gambling problems.