What factor determines the order that references appear in the reference block of a naval letter?

The order that references appear in the reference block of a naval letter is determined by the order in which they are cited or mentioned in the text. This approach ensures clarity and makes it easier for the reader to locate a reference that corresponds directly to its usage within the document. When references are listed sequentially as they appear in the main text, it facilitates logical navigation through the document, aligning the reader's understanding with the context in which each reference is introduced. This method establishes a clear flow, enhancing the overall coherence of the communication. Other factors, such as relevance to the subject matter or the importance of the references, may guide which references are included, but do not dictate their specific order in the reference section.