What is a Rearguard?

Introduction A rearguard or rear security is a 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… Read More

What is a Vanguard?

Introduction The vanguard (sometimes abbreviated to van and 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. In naval warfare the van is the advance ship, or fleet, that will… Read More

What is Oblique Order?

Introduction The oblique order (also known as the ‘declined flank’) is a military tactic whereby an attacking army focuses its forces to attack a single enemy flank. The force commander concentrates the majority of their strength on one flank and uses the remainder to fix the enemy line. This allows a commander with weaker or… Read More

What is an Echelon Formation?

Introduction An echelon formation is a (usually military) formation in which its units are arranged diagonally. Each unit is stationed behind and to the right (a “right echelon”), or behind and to the left (“left echelon”), of the unit ahead. The name of the formation comes from the French word échelon, meaning a rung of… Read More