What is a Rearguard?

Introduction A rearguard is that part of a military force that protects it from attack from the rear, either during an advance or withdrawal. The term can also be used to describe forces protecting lines, such as communication lines, behind an army. Even more generally, a rearguard action may refer idiomatically to an attempt at… Read More


What is a Vanguard?

Introduction The vanguard (also called the advance guard) is the leading part of an advancing military formation. It has a number of functions, including seeking out the enemy and securing ground in advance of the main force. Refer to Rearguard. Brief History The vanguard derives from the traditional division of a medieval army into three… Read More