With the creation of the Lithuanian armed forces in the early 20th century, the question of having officers loyal to the idea of the nation-state inevitably arose. It became especially relevant during the Wars of Independence that followed the First World War. Due to the need to create the armed forces urgently, individuals from different backgrounds and with different experiences joined the corps of officers in the emerging Lithuanian army. Therefore, a variety of tensions of a political and social nature arose between them, which in some cases grew into open conflict. The article examines the question of whether these conflicts were based on differences in officers’ education, social background, national engagement or experience. Can we explain the conflicts between the officers by the generation gap? And what role was played in these conflicts by the experience of military service acquired by some officers in the Imperial Russian army, including experience in the First World War?