Blood Angels - Heraldry of the Host: The Blood Angels adhere to a strict heraldic system, allowing them to recognise what company and squad any given Battle-Brother belongs to at a glance.The advantages of such swift recognition amid the madness of battle are obvious. More than this, however, the Sons of Sanguinius revere their heraldry, and bear these markings as badges of pride.Instead of using the standard Codex-compliant symbols to show a unit's squad specialty or helmet colour to denote rank, the Blood Angels' helms indicate their operational role.Battleline: RedClose Support: YellowFire Support: BlueVeteran Marine/Command: GoldBlood Angels Librarians have blue armour with the left shoulder plate painted red. The Chapter badge is located on the right knee plate, black with a red background.Blood Angel Sanguinary Priests have red armour trimmed in white, with a white Chapter badge on their left shoulder plate.The Blood Angels Death Company varies significantly from their brethren's colour scheme; their armour is repainted black, with red crosses, symbolizing the sacrifice of Sanguinius.The Sanguinary Guard wear armour that is completely golden in colour, with white wings, and many Chapter markings all over the armour.Blood Angels company markings differ from those outlined by the Codex Astartes in utilising symbols on the right shoulder plate instead of different colored trim and Imperial Gothic numerals.The emblem of the 1st Company is a skull while all of the other companies use different coloured blood drops.Once a brother joins the Death Company, his company emblem is replaced with the icons of the doomed brotherhood.Only in special cases does the Chapter badge not appear on the left shoulder plate.The following is a list of how each company represents itself:1st Company (Veteran): A white skull over red background on the right shoulder plate. On Terminator (Tactical Dreadnought) Armour, the left shoulder plate shows the 1st Company's specific heraldry, the right shoulder guard displays the Chapter badge in black (yellow for Sergeants).2nd Company (Battle): A single yellow blood drop.3rd Company (Battle): A single white blood drop.4th Company (Battle): A single green blood drop.5th Company (Battle): A single black blood drop.6th Company (Reserve Tactical): Twin yellow blood drops, side by side.7th Company (Reserve Tactical): Twin white blood drops, side by side.8th Company (Reserve Assault): Twin green blood drops, side by side.9th Company (Reserve Devastator): Twin black blood drops, side by side.10th Company (Scout Marines): The Blood Angels' Scout Company wears a black skull on the right shoulder plate, and the Chapter badge on the left.The Chapter Master (who is called the "Lord Commander" by the Blood Angels) has a personal bodyguard that wears gold armour with black trim, painting the right shoulder plate red.The Chapter badge is displayed on the left shoulder plate, a white skull displayed on the right.Unlike other Chapters of the Adeptus Astartes, the Blood Angels' squad markings comprise a single symbol worn on the right knee guard.Following Roboute Guilliman's recent revisions to the Codex Astartes and the reorganisation of the Reserve Companies in the Era Indomitus, ten additional squad numbers and icons have been introduced to the Chapter, which now allows more than 100 battle-brothers in a company in certain circumstances.1st Squad: A white skull on a black background.2nd Squad: A white skull on a blue background.3rd Squad: A red blood drop on a yellow background.4th Squad: A red blood drop on a black background.5th Squad: A white X on a black background.6th Squad: A white X on a blue background.7th Squad: A yellow lightning bolt on a black background.8th Squad: A black lightning bolt on a yellow background.9th Squad: A yellow angelic wing on a black background.10th Squad: A black angelic wing on a yellow background.11th Squad: A yellow skull on a black background.12th Squad: A black skull on a yellow background.13th Squad: A white blood drop on a black background.14th Squad: A white blood drop on a blue background.15th Squad: A red saltire ("X") on a black background.16th Squad: A red saltire ("X") on a yellow background.17th Squad: A white lightning bolt on a blue background.18th Squad: A white lightning bolt on a black background.19th Squad: A red angelic wing on a black background.20th Squad: A white angelic wing on a blue background.The sergeants of Blood Angels squads have black pauldrons displaying the Blood Angels blood drop icon with red trim, rather than the blood-red colouration of their squadmates. Veteran Sergeant's shoulder guards have wings placed on the blood drop.Senior Blood Angels command personnel, including Lieutenants and Captains, bear more ornate versions of their company markings.