Skin disease, disease of the musculoskeletal system, and respiratory infections are the most frequent reasons for military personnel to seek medical care. The Oslo Military Clinic serves all of the military personnel in Oslo and the surrounding region, including officers and civilian employees. From September 1996 to May 1997, 1,360 patients were diagnosed and treated by the author, and the data are included in the following study. Upper respiratory disease was the primary reason for seeking medical attention in 26% of the patients, 21% visited the clinic because of disease or pain in the musculoskeletal system, and 16% suffered from a skin disease. Apart from the low number of female patients, the patient population and the disease spectrum observed in the military clinic are very similar to those in a general medical practice. Among the 222 patients suffering from a cutaneous disease, eczema (42 patients), allergy (excluding dermatitis) (34 patients), acne vulgaris (23 patients), and sexually transmitted diseases (28 patients) were the most prevalent processes. Other less prevalent skin diseases were fungal infections, herpes simplex infection, nevi, common warts, and superficial bacterial skin infections. Skin diseases seen in one patient only included erysipelas, herpes zoster, dermatitis herpetiformis, and Ehlers-Danlos syndrome. Good clinical skills in dermatology are of paramount importance in military medicine, and if possible, the military should appoint a dermatologist to its medical team to rapidly diagnose and treat the large number of patients with skin disorders.