Final answer:
In Navy correspondence, the subject line is formatted in all capital letters, which differs from the common italics or bolding used in other formal communications.
Step-by-step explanation:
In Navy correspondence, the subject line is formatted in a specific way which is different from typical business letters or academic publications. According to Navy correspondence guidelines, the subject line should not be italicized, bolded, or centered. Instead, the correct formatting for a subject line in Navy correspondence is to use all capital letters. This ensures that the subject is clearly visible and distinguished from the rest of the text. This formatting choice aligns with the need for clarity and efficiency in military communications.