Which publication provides standard subject identification numbers for classifying correspondence?

The publication that provides standard subject identification numbers for classifying correspondence is SECNAV M-5210.2. This reference is crucial within the Navy and Marine Corps for maintaining an organized and standardized system of classification for various types of correspondence. Standard subject identification numbers (SSINs) facilitate efficient tracking, retrieval, and filing of correspondence, ensuring that all communication is methodically categorized.

This structure is particularly important for maintaining operational efficiency and clarity within the various branches of the military, where clear communication is essential. By using the guidelines established in SECNAV M-5210.2, personnel can ensure compliance with official communication protocols, thus improving overall correspondence processing and ensuring consistent application of standards across the board.