as "farts and darts", much as the other services' oak leaf motifs are known as "scrambled eggs". The USAF service cap is also worn by the Air Force's civilian auxiliary, the Civil Air Patrol (CAP). Senior members (those over the age of 18 who are not cadets and everyone over 21) may wear the service cap with a CAP-specific badge. United States Army In the United States Army, service caps are optional for wear with the green service uniform. They consist of a dark olive drab top and hat band matching the uniform coat with a russet brown leather visor and chinstrap. The combination cap for the blue service is midnight blue matching the uniform coat with a gloss black visor. The enlisted cap has a golden stripe on top of the cap band and a black chinstrap. The version for officers has a cap band with the branch-of-service color between two golden stripes, and a gold-colored chinstrap. Field-grade officers have oak leaves, known unofficially as "scrambled eggs", on the visor. General officers' caps are similar to those of field-grade officers, but the cap band is dark blue and embroidered with gold oak leaf motifs. For both the green and blue caps, enlisted soldiers wear a cap badge of a circular disk embossed with the United States' coat of arms, while officers wear a larger badge of the coat of arms without any backing. United States Coast Guard The United States Coast Guard wears the combination cap, known as the combo cover, with the Service Dress Blue uniform (SDBs), the Tropical Blue uniform (Trops), and with all other formal dress uniforms. The cover is identical to that of the Navy with respect to the chinstrap and peak ornamentation. Its crown is white. The buttons securing the chin strap to the sides of the band are smaller versions of the buttons worn on the Coast Guard's uniform coats. The blue band around the cap includes blue fabric extending upward on the front of the crown to serve as a backing behind the device. In the case of enlisted personnel, this extension is a blue circle identical to that on the caps of naval officers and chief petty officers. In the case of commissioned officers, however, the extension is a more elaborate polygon to accommodate the officers' cap device. Unlike their naval counterparts, coast guardsmen below the rank of chief petty officer