The article considers iterative methods of expert assessments for research on the relevance of improving forces and means of combat (operational) support for the purpose of use of military units (units), which are planned to be equipped with new (upgraded) models of weapons. The improvement of forces and means is formally considered as changes in armaments, military equipment and documents regulating the basics of training and use of troops (forces) for their intended purpose. Such documents may be the combat statutes of the types of troops of the Armed Forces of Ukraine, as well as documents of the regulatory framework for the organization of types of support and the use of military units and units - forces and means of the relevant type of support.
The improvement of forces and means in terms of content is studied as a component of the acquisition of capabilities from combat (operational) support, belonging to the functional groups (integrated category) capabilities: "Protection and survivability" (PROTECT) and "Intelligence" (INTELLIGENCE).
Formation of decision to improve the forces and means of combat (operational) support is considered as part of study of the relevance of changes in regulations.
The expediency of the iterative approach and expert assessment of the relevance of changes in regulatory documents in accordance with the degree of work on the development and adoption of military units (units) of the equipment by type of combat (operational) support, including parallel continuous research (analysis) of the results and adjusting previous stages of work.
The proposed iterative approach is improved compared to the expert method of simultaneous assessment of the need to make changes in all components of forces and means of combat (operational) support of different levels of their hierarchy: weapons, military equipment and documents of the general system of normative support of troops (forces).
Recommendations for the use of the proposed approach by military authorities to increase the effectiveness of regulatory support for the use of forces and means of combat (operational) support.