What sleeve insignia is used for ranks O-1 through O-6?

The insignia used for ranks O-1 through O-6 in a military context is consistent with the design of their shoulder boards. This means that the sleeve insignia for these ranks typically reflects the same hierarchy and symbols that are found on the shoulder boards, allowing for a cohesive and uniform representation of rank throughout a member's uniform. This approach maintains clarity and helps in the quick identification of officer ranks both at a distance and during formal occasions.

While unique designs for each rank could provide distinctiveness, the use of identical designs across both shoulder boards and sleeves promotes simplicity and uniformity. The options that mention only gold or silver stripes refer to specific styles that don’t apply uniformly across all ranks within this range, as they utilize various combinations of insignia with consistent design elements.