The aim of the article is to analyze the organization and importance of transport processes in meeting the needs of military units. The article explains what a military unit is and what its needs are, met by the transport subsystem. In the following part of article the author presented the organization of supplying military units and entities that participate in it, as well as discussed the role of military transport processes in ensuring military security. Finally, the challenges facing the transport for military units are presented. The article was prepared on the basis of a broad review of the literature, documents of the Ministry of National Defense and legal acts. The research methods used are analysis, synthesis, abstraction and comparison. The conducted analysis allows to conclude that the activity of each transport unit generates various types of needs that can be met only with the participation of an efficiently operating military transport system. Its role is crucial due to the fact that it determines the success of operational and military activities carried out by a military unit, and this in turn - in a broader perspective - translates into the possibility of ensuring the country's military security. When identifying the challenges facing the transport system implemented for military units, attention was paid, inter alia, to on the need to create an effective information system, an effective transport fleet management system, protection and maintenance of the transport network and the development of such a method of action that will allow the enemy to be kept in a state of ignorance about the number and location of transported military formations.