This command insignia is based on the one used by command officers aboard the Star Trek TOS (the original series) Enterprise. In the original series the famous Starfleet arrowhead was specific to the USS Enterprise, with officers aboard other vessels using different shapes. Only command officers had the star-shaped design inside the arrowhead. Engineering and science officers' badges used different shapes to denote their area of expertise. This design uses the logo on the left side of the chest as depicted in Star Trek, and so the clothing available in this section is great for Star Trek costumes and fancy dress, should you feel like going to a party as your favourite Star Trek character.