#rearguard

• Rearguard — An old military term or archaic loanword utilized to designate the rearguard of an army, the rear troops tasked with protecting a retreat, or the back of a battle formation.
• Rearguard — A part of a military unit positioned behind the main forces, tasked with protecting their rear during movement or covering a retreat before the enemy; a group of people who lag behind or maintain conservative, outdated ideas.