Objective: The general objective of the swdy is to investigate the extent of risky sexualrnbeha vior among Militmy personnel and to explore the variolls lInderlying causes andrnconsequences of their sexual behavior in Tigray regional state, Zalambessa fown.rnMethod: A cross-sectional study design was employed to achieve the staled objectives. Simplernrandom sampling was used fa select the 420 respondents. To analyze Ihe data univariate.rnbivariate, and multivariate techniques of data analysis were applied. Chi square lest wasrnemployed to see rhe association between predictive and outcome variables. Logistic regression isrnalso jit to identify determinants of risky sexual behavior using Statistical Package for SocialrnScientists (SPSS Version 15). To in -depth the results of the quantitative data, qualitative datarnwere also generated using FGD.rnResults: Ninety-two percent of the study population has ever had sexual intercourse. Eightyninernpercent, forty-four percent and twenty-jive percent of the respondents had sexualrnintercourse, had sex with commercial sex workers and had at leas! four or more sexual partners,rnrespectively in the last 12 months. Nin ety-six percent and ninety-jive percent of the respondentsrnreported to have ever heard about condoms alld llsed in their hfe time consistently, respectively.rnMultivariate results sholVed that the likelihood of having sex with commercial sex workers whornhad ever married is more than never married by a fac tor of 1.95. The likelihood of having workrnrelated stress for those who said no is greater than those who said yes by a f actor of 1.6. Thosernrespondents who took alcohol in the last fOllr weeks preceding the survey were 1II0re likely tornhave sex within commercial sex workers than those who did not consume alcohol.rnThe logistic regression model also ref/ects that variables like education, marital status and workrnrelated stress come up as determinants of sex with commercial sex workers. As, educationrnincreases the likelihood of doing sex with commercial sex workers decreases. This indicates thatrneducation has its own positive role in denying sex with sex workers.rnThe model again depicts that age, education and work related stress are determinan.ts of multiplernsexual panners. Age is positively correlated with multiple sexual partners. Thus it can be saidrnthat increase in age by itself has Q positive influence in developing multiple sexual partners. Onrnthe Ollter hand, education has a negative influence on having multiple sexual partners.rnConclusion: Studies on sexual behavior of the sexually active population in general and thernadolescent including Milit{l/Y force in particular are crucial ill designing, implementing andrnmonitOring effective intervention programs-;-targeted in- behavioral changes that-enable-lO_rnprevent or to reduce risky sexual behavior. Finally, the study recommends that in orderrnto bring behavioral change in the military personnel, concerned military h.ealth officers shouldrnarrange programs using Drama, Magazine (Tikuakur Nebroch or the black Tig ers), in the AntirnADS club. Peer education should also be promoted if risky sexual behavior is to be eliminatedrnamong the military personnel.