Abstract: This study aims to analyze the effect of intellectual intelligence, work motivation, and work discipline on personnel performance, both simultaneously and partially, and to identify variables that influence improving performance. The research was conducted at the Sarnas Squadron at Atang Sendjaja Air Base in Bogor. The method used was a quantitative approach with a comparative causal design. Data analysis techniques were done through descriptive analysis and multiple linear regression to test the simultaneous and partial effects between variables. The results indicate that intellectual intelligence, work motivation, and work discipline simultaneously and partially significantly influence the performance of personnel at the Sarnas Squadron at Atang Sendjaja Air Base in Bogor. Among the three variables, work discipline contributed most significantly to performance improvement, emphasizing the importance of implementing high discipline in a military work environment. These findings reflect that operational success and work effectiveness are not only influenced by cognitive abilities and motivational drives but are substantially determined by adherence to rules, firmness, and consistency in performing tasks. These findings contribute theoretically to developing human resource management literature and practically to military management in enhancing performance effectiveness through improved discipline, motivation, and intellectual development.