The Angel Guard Chapter wears emerald-green power armour.
A red High Gothic numeral centered in the middle of the squad specialty symbol indicates squad number.
The colour of the trim on the shoulder guard indicates company number in accordance with Codex Astartes-approved heraldry -- i.e. white (1st Company), yellow (2nd Company), red (3rd Company), etc.
The Angel Guard's Chapter badge is a set of white wings displayed and elevated on a field of emerald-green.
A small red shield is centred upon it. The heraldry upon the shield consists of a white Iron Halo.
- Adeptus Astartes: Successor Chapters (Limited Release Booklet), pg. 5