As the topic of my graduation thesis, I chose the diet of roman soldiers for which I was interested by the Culinary Arts in Ancient Rome course. In general, a diet of a certain nation is an important feature of its cultural and civilizational progress and clearly reflects the circumstances of the time in which that nation lived. Because of that, for the preparation of my graduation thesis, I decided to research what kind of eating habits Roman soldiers had, and in which way did they prepare supplies in the conditions of peace and war. The paper will research a frequently asked question – was it, and if it was, to what extent was the diet of Roman soldiers vegetarian? I will also pay attention to the differences in the quality of food and drink consumed by soldiers, private persons and gladiators, and it will also be explained how did the soldiers provide food for the animals In my research, I will use several sources that talk about their diet. I will use sources that talk about Tiluri and Burnum - two military camps discovered in Croatia. Furthermore, I will use Vegetius' text Epitoma Rei Militaris, Caesar's texts Commentrii de bello Gallico and Commentarii de bello civili, Pliny's text Naturalis historia, Apicius' text De re coquinaria, Olivia's Cibalitan cookbook, etc. The list of sources will surely expand during the research of the mentioned topic by reading the sources, I will come to conclusions and I will compare the sources in order to notice similarities and differences depending on time and geographical characteristics.