The Chief of the Turkish General Staff is allowed to wear special insignia.
Note : Commodores in the Turkish navy are not given special ranks or insignia.
In the Turkish navy a commodore is not a rank but a position (usually group commander).
Insignia of category are worn right above the circle in the topmost stripe, both on the sleeve and the shoulder board.
(Admirals with special circumstances (doctors and engineers) may wear them on their sleeves, but not shoulders) The rank insignia of commissioned officers.