Only a standard, guidon, Queen's Colour, or a banner presented by either a member of the Royal Family or the governor-general may be carried by a royal guard of honour. Only a regimental colour or a banner presented by a personage other than a member of the Royal Family may be carried on a half guard of honour. A smaller unit honouring distinguished visitors at a military installation is known as a "quarter guard". The commander is three paces in front of the second file from the right and accompanies the personage for whom the guard is mounted. An officer carrying the Colour stands three paces in front of the centre; if there is a third officer he will be three paces in front of the second file from the other flank.