<![CDATA[Character education is a primary focus of the national education system, aiming to mold students who are not only academically excellent but also possess discipline, a sense of responsibility, and a strong national spirit. One method of implementing character education in Vocational High Schools (SMK)—specifically within the Maritime/Shipping specialization—is the adoption of a semi-military disciplinary culture. This study aims to analyze the influence of a semi-military disciplinary culture on the "state defense" attitude (*sikap bela negara*) of 10th-grade students in the Maritime specialization at SMKN 1 Glagah, Banyuwangi Regency. The study employs a quantitative approach using an *ex post facto* method. The total population consisted of 139 students, with a sample of 58 students selected via proportional random sampling. Data collection was conducted using a questionnaire based on indicators of semi-military disciplinary culture and state defense attitudes. Data analysis included descriptive statistics, prerequisite tests (normality and linearity tests), and hypothesis testing using simple linear regression analysis with SPSS version 26. The results indicate that the semi-military disciplinary culture has a positive and significant influence on students' state defense attitudes. This is evidenced by the hypothesis test results, which show a significance value of 0.000 (<0.05) and a calculated t-value of 13.998, leading to the acceptance of the research hypothesis. A regression coefficient of 0.821 indicates that any increase in the implementation of the semi-military disciplinary culture is accompanied by an increase in students' state defense attitudes. The findings demonstrate that instilling discipline through a semi-military system effectively shapes students into individuals who are more responsible and rule-abiding, possess a love for their country, and exhibit a heightened awareness of nation and state.]]>
