I personally like the “Mixed Armament Deployment, Logistics, And Demolition Squad” or the M.A.D.L.A.D.S.

I also got “Unorthodox Warfare Unit” or U.W.U. As well as “Overt Warfare Operations” or O.W.O. Let’s not forget “Aysymetric Warfare Operations Organization” or A.W.O.O. “Counter Assault Tactics Squads” and a few other puns also pop to mind. I could go on for a while. 

That said if we are supposed to be a secret unit I can see us removing any former unit patches and being called “The Null Squadron” [s]or the blank flanks[/s] or something similar. Depends on what you want to emphasize with our squad nickname