Due to a rapidly changing global environment, the relationship between leadership models and work commitment shows the significant influences on the sustainable development and organizational growth in enterprises, which are also as important as in armies. A nation’s armies are taken as an indicator of her military combat capability potentials. The purpose of this study was to explore the relationships among transactional leadership and transformational leadership on work commitment in Taiwan armies. A questionnaire survey was conducted on the combat engineers in the central of Taiwan to collect research data. A total of 240 questionnaires were distributed, and 230 valid responses were obtained, the effective rate of 83%. The statistical analyses included descriptive analysis, one-way ANOVA, and canonical correlation analysis. The research findings are as follow: 1.There was a significant difference in the impacts of the transactional leadership on work commitment. 2.The transformational leadership has significant positive effects on work commitment as well. 3.There were some significant differences in work commitment among the combat engineers with different background variables.