A Corps Badge is a Distinct badge worn by military personnel to distinguish themselves from other Corps

Corps

A corps is either a large formation, or an administrative grouping of troops within an armed force with a common function such as Artillery or Signals representing an arm of service...

, (Known as Branch insignia

United States Army branch insignia

Branch insignia of the United States Army refers to military emblems that may be worn on the uniform of the United States Army to denote membership in a particular area of expertise and series of functional areas...

 in the United States) where a Corps is a grouped by a common function (i.e. Infantry

Infantry

Infantrymen are soldiers who are specifically trained for the role of fighting on foot to engage the enemy face to face and have historically borne the brunt of the casualties of combat in wars. As the oldest branch of combat arms, they are the backbone of armies...

, Artillery

Artillery

Originally applied to any group of infantry primarily armed with projectile weapons, artillery has over time become limited in meaning to refer only to those engines of war that operate by projection of munitions far beyond the range of effect of personal weapons...

, Cavalry

Cavalry

Cavalry or horsemen were soldiers or warriors who fought mounted on horseback. Cavalry were historically the third oldest and the most mobile of the combat arms...

, Signals Corps etc.) The use of Corps Badges and how a corps is identified is varied around the World.

British Military

In the British Army

British Army

The British Army is the land warfare branch of Her Majesty's Armed Forces in the United Kingdom. It came into being with the unification of the Kingdom of England and Scotland into the Kingdom of Great Britain in 1707. The new British Army incorporated Regiments that had already existed in England...

 each Corps has a distinct Cap badge

Cap badge

A cap badge, also known as head badge or hat badge, is a badge worn on uniform headgear and distinguishes the wearer's nationality and/or organisation. The wearing of cap badges is a convention commonly found among military and police forces, as well as uniformed civilian groups such as the Boy...

 for their corps as well as Stable belt

Stable belt

A stable belt is an item of uniform used in the armed forces of the United Kingdom and other Commonwealth countries. Stable belts or similar derivatives are also worn by the armed forced of other nations such as Denmark....

.

Irish Defence Forces

In the Irish Defence Forces

Irish Defence Forces

The armed forces of Ireland, known as the Defence Forces encompass the Army, Naval Service, Air Corps and Reserve Defence Force.The current Supreme Commander of the Irish Defence forces is His Excellency Michael D Higgins in his role as President of Ireland...

 the Air Corps

Irish Air Corps

The Air Corps is the air component of the Defence Forces of Ireland providing support to the Army and Naval Service, together with non-military air services such as search and rescue and the Ministerial Air Transport Service...

 and Army

Irish Army

The Irish Army, officially named simply the Army is the main branch of the Defence Forces of Ireland. Approximately 8,500 men and women serve in the Irish Army, divided into three infantry Brigades...

 use Distinct Collar Corps badges for each corps, As the same Cap Badge

Irish Defence Forces cap badge

The Irish Defence Forces Cap Badge is – in distinction to the practice in British, Commonwealth, and many other militaries around the world – common to all services and corps...

 is used by all Corps. The Air Corps has its own corps badge mainly worn by Line personnel, while Corps units retain their Corps badge.

American Civil War

Corps Badges were originally worn by Union soldiers on the top of their army forage cap (kepi), left side of the hat, or over their left breast.