Close ranks
Definition 1 of 2
Pro Tip 1/3Shared Challenge
Used when a group faces a common problem and chooses to support one another. 
During the crisis, the community decided to close ranks to protect their neighborhood.
Pro Tip 2/3Unity Strength
Implies that uniting makes the group stronger against external pressures or criticism. 
The politicians decided to close ranks to push the new policy through.
Pro Tip 3/3Loyalty Display
Shows members are loyal to the group's goals or individuals by standing together. 
When the principal was criticized, the teachers closed ranks in support.