A lower-ranking officer is called upon to replace a senior officer, or fill a position higher than the current rank held.
1I am to command our Reserve Battalion, with acting rank of Lieutenant-Colonel.
2He has the acting rank of captain.
3A first lieutenant with acting rank of commander takes the order in the gray dawn of a February day.
4I would like to recommend that he be given the acting rank of Captain.' He looked up from the paper.
5I will put him in orders, today, as appointed adjutant to the Minho Portuguese regiment, with the acting rank of captain.