Is it allowed to give the cadet commander of a squadron a special cord or "marker"
I have seen this done by other squadrons,
Some wings have an approved supplement which allows a squadron cadet commander to wear a shoulder cord; you will need to check with your wing to see if there is one. You cannot, however, just throw on any old shoulder cord just because you hold x duty position.
Makes sense, thank you
You could also have your squadron commander submit a formal request through official channels to authorize it for your unit. It would need to be approved by the wing commander.
So is there a set item or no?
No.
See CAPM 39-1, 9.5 Items which May be Authorized by Wing Commander