. "An Acting rank is a military designation allowing a commissioned - or non-commissioned officer to assume a rank\u2014usually higher and usually temporary\u2014with the pay and allowances appropriate to that grade. As such, an officer may be ordered back to the previous grade. This situation may arise when a lower-ranking officer is called upon to replace a senior officer, or fill a position higher than the current rank held."@en . "Acting (rank)"@en . . . . . "An Acting rank is a military designation allowing a commissioned - or non-commissioned officer to assume a rank\u2014usually higher and usually temporary\u2014with the pay and allowances appropriate to that grade. As such, an officer may be ordered back to the previous grade. This situation may arise when a lower-ranking officer is called upon to replace a senior officer, or fill a position higher than the current rank held."@en . . .