In this citation, what is the "Part" of the manual reference in questions? M21-1, III.iii.2.A.

In the citation M21-1, III.iii.2.A, the "Part" of the manual reference is identified by the Roman numeral "III." The structure of this citation indicates different levels of hierarchy within the manual: the first part is indicated by the numeral, followed by sections and subsections. The "Part" designation refers specifically to the highest level, which is represented here by "III," denoting a specific section of the manual where relevant information can be found.

The other components of the citation specify different subdivisions within Part III, such as "iii" for sub-sections and "2.A" for even more detailed divisions, but they are not considered part identifiers in the context of this question. This structure allows for organized navigation through the manual and facilitates locating pertinent information regarding veteran services.