close ranks

Unite against a common opponent, present a united front. The term originated in the 1600s in the military, where it also was put as “to close files.” It alluded to the style of battle in which the troops were aligned side by side in neat rows; the order to “close ranks” meant to move the rows closer together, creating a seemingly impenetrable mass of men. The term was soon being used figuratively and became a cliché. For example, “Will the wankel [engine] be enough to sustain NSU as an independent motor company, or will NSU one day have to close ranks further with Citroen?” (Economist, Sept. 2, 1967).