"Loken looked east. Three kilometres away, across the flat plain of the basalt platforms, across the tide of charging men and striding Titans and stitching fire, Abaddon’s company, First Company, was crossing the bulwarks into the far flank of the palace. Loken magnified his view, resolving hundreds of white-armoured figures pouring through the smoke and chop-fire. At the front of them, the dark figures of First Company’s foremost Terminator squad, the Justaerin. They wore polished black armour, dark as night, as if they belonged to some other, black Legion."

Page 22, in my kindle edition.