Abstract Introduction Workplace health promotion measures (WHPM) are among recommended options for maintaining employees health, important for the German Federal Armed Forces as an employer. In order to detect associations between WHPM and health care utilization, we recorded the number of outpatient visits and hospital stays, differentiated according to gender, military or civilian activity. Methods Prospective longitudinal observational substudy with cross sectional analysis of items regarding use of medical services at T0 (6-9/2022). Analysis for T1 (2023) and T2 (2024) follow. Data were obtained with a web-based employee survey to record self-reported endpoints. A total of about 224.000 employees by the German Armed Forces were addressed. Results Survey participation rate was 10.5% (n = 23.568) of all employees in T0, 29.1% were women and 0.3% reported being diverse, 43.2% of the participants were <40 years of age. Independently of taking part in WHPM, we did not detect differences in the proportion of male soldiers receiving treatment in hospitals of the German Federal Armed Forces. Among female soldiers without WHPM, 37.5% stayed in hospitals and with WHPM 30.5%. Higher % of women (84%) than men (78%) presented to the military - or family physician (w: 81%, m: 73%), independent of participation in WHPM and assignment for civil or military. In last 4 weeks, more women (81.3%) than men (65.6%) were prescribed medication. Female employees in civilian w.p.(84.8%) took more medications than those in military w.p (77.7%). Oral contraception was used by 20% of women in both civilian and military w.p. Conclusions There are no gender differences nor difference for civilian or military employees concerning the number of days staying in hospital. More women than men recieved regular outpatient medical care and more women than men take medication regularly. *Ludwig S and Roy R share last authorship Key messages • There are no gender differences nor difference for civilian or military employees concerning the number of days staying in hospital. • More women than men recieved regular outpatient medical care and more women than men take medication regularly.