Command level officer
Command level officer, command officer, command grade was a high-ranking officer with certain given privileges. 

Commander Rogerson of the US Navy's  was the command duty officer when the Russian spy Pavel Chekov was found aboard in 1986. He also referred to himself as Command Officer Rogerson. ()

The term would also sometimes apply to those personnel assigned to Starfleet's command division. ()

In Starfleet, the trial board for a mutiny required "no less than three command officers." For Spock's mutiny trial aboard the , the three available command officers present where Captain James T. Kirk, fleet captain Christopher Pike, and Commodore José I. Mendez. () Years later, when Janice Lester was posing as James T. Kirk, she/he ordered a court martial of Spock, with lieutenant commander's Montgomery Scott and Leonard McCoy served on that trial board. ()

While growing up, Geordi La Forge's mother, Silva La Forge, was a command officer. () 

Several of the senior officers aboard the , including William T. Riker, Data, Beverly Crusher, Deanna Troi, and Geordi La Forge were considered among the ship's command officers. During a period in 2364, when Captain Jean-Luc Picard was possessed by a Beta Renner entity, the senior officers discussed how to deal with the change in the captain's mentality. Doctor Crusher determined that she could enter a medical log citing her evidence, along with an agreement between the command officers, and with the support of the first officer. Riker, as the second-in-command, would have need to ultimately make the final decision. ()

Rear Admiral 's investigation into the Nova Squadron's crash, and the resulting death of Joshua Albert, required two command level officers to complete. In that case, it was her along with Vulcan Captain Satelk. ()

For Nog, a non-Federation citizen, to attend Starfleet Academy he needed a letter of reference from a command level officer before they could take the entrance exam. In his case, he was able to receive this letter from Benjamin Sisko, captain of Deep Space 9. ()

In order for  to make a temporary modification to 's sensors, if she could gain access the ship's astrometrics processors, she could have made the modification permanent. Captain Kathryn Janeway approved of the work, but informed her that she would need a command officer with her to override the security lockouts. Chakotay volunteered to assist. ()

Military ranks