Since May, sailors have purchased 276,000 black Navy rank tabs, nearly 20,000 per week, she said. The exchange command has 59,000 black rank tabs in stock with 69,000 on order, Sturkie said.

Following are the 31 U.S. presidents who served in the military arranged in ascending order, along with the dates of their presidency, their military rank, and the branch of the military they last ...