Background: Sexual harassment (SH) is prevalent in military settings and dependent on the workplace environment. Few studies have investigated this issue in non-US military settings nor have examined how contextual and individual factors related to Military Sexual Trauma (MST) vary by gender. Methods: This study draws on a national sexual survey in the French military including 1268 servicemen and 232 servicewomen. We examined four sexual stressors (repeated sexual comments, sexual coercion, repeated unwanted verbal sexual attention and sexual assault (SA)) and two combined measures of verbal SH (comments, unwanted attention) and MST (all forms). We conducted multivariate logistic regressions to identify contextual and individual factors related to these outcomes. Results: 36.7% of women and 17.5% of men experienced MST in the last year and 12.6% and 3.5% reported SA. Factors associated with verbal SH differed from those related to SA. The odds of verbal SH were elevated among men who had sex with men (OR = 3.5) and among women officers (OR = 4.6) while the odds of SA were elevated among men less than 25 years (OR = 3.5) and women with less than a high school diploma (OR = 10.9). The odds of SH increased by 20% to 80% when men worked in units with higher female representation, higher prevalence of MST (sexual comments, or sexual assault, coercion, repeated unwanted attention) and lower acceptance of women in the miliatry. The odds of SA also increased by 70% among men working in units with higher female representation and higher prevalence of sexual oppression. The odds of SA against women were particular high (OR = 5.7) in units with a high prevalence of sexual assault, coercion, or repeated unwanted attention. Conclusion: MST is common in the French military, with women experiencing more severe forms than men. Our resuls call for programmatic action to reduce workplace factors related to verbal SH and SA in the French military.