What is the insignia for Rear Admiral Lower Half (O-7)?

The insignia for Rear Admiral Lower Half (O-7) is designated as one silver star. This specific insignia signifies the rank of Rear Admiral Lower Half within the U.S. Navy and other branches that utilize a similar rank structure. Each admiral rank has its unique insignia, and the silver star is an established symbol of the O-7 rank, distinguishing it from other ranks.

For context, the insignia for a Rear Admiral Upper Half (O-8) features two silver stars, which denotes a higher rank and comes after the O-7 level within the rank hierarchy. Other insignias mentioned, such as the one gold oak leaf, represents the rank of Commander (O-5), and not an admiral rank. The distinction in insignia is crucial, as it not only helps to identify the rank but also reflects the level of responsibility and authority held by the officer in the naval structure.