The army mobilization criteria for induction list bronchiectasis as disqualifying for service. Soldiers with this disease are a definite liability. Screening by chest roentgenography on induction is much more effective in the detection of pulmonary tuberculosis than of bronchiectasis, for the latter may exist in spite of a relatively negative plain roentgenogram. Bronchography is rarely done, if ever, at induction stations. Furthermore, while a careful history alone will frequently suggest a diagnosis of bronchiectasis, this, too, is not a usual part of the examination for entrance into military service. Next to tuberculosis, bronchiectasis was the most commonly encountered chronic pulmonary infection at the hospital from which this report comes. Altogether 101 cases were definitely diagnosed by lipiodol injection during the four-year period, January 1942 to January 1946. While bronchiectasis among military personnel differs in no respect from the condition in civilians, army life subjects soldiers to physical strains and exposures which usually precipitate hospitalization more promptly for those with pre-existing disease. In this regard, it is worthy of note that in 74 patients, bronchiectasis was diagnosed during a period of hospitalization occurring within the first six months of military service. Also, judging from the past history, 88 of the 101 soldiers had bronchiectasis prior to induction. These figures constitute a definite medical challenge. They are excusable no doubt, in some degree, because of the urgent necessity for the rapid creation of a large army. The present study afforded an opportunity to review the clinical and roentgen manifestations of bronchiectasis in age groups representing, for the most part, supposedly healthy individuals. A plea is made for the recognition of the frequency of this disease and its early diagnosis. It cannot be emphasized too strongly that the conventional textbook triad of persistent cough, copious, foul expectoration, and clubbed fingers usually represents far advanced disease. Appropriate therapy, particularly surgical, in suitable cases can be curative. The internist must assume the responsibility for the prompt diagnosis and proper disposition of the bronchiectatic patient. Clinical Features All but 2 of the 101 patients constituting this series were males; 98 were white and 3 colored. Table I shows the distribution among age groups. Past Respiratory History: There is virtual unanimity of opinion that the inception of bronchiectasis can in many instances be traced to childhood. In this series, pulmonary symptoms originated within the first decade of life in 63 cases, during the second decade in 27, and in subsequent years in the few remaining cases. Many soldiers considered their symptoms as trivial. On further inquiry it was found that 83 patients dated their “trouble” from an episode of pneumonia, of whom 49 had one attack and 34 more than one.