glanced over his shoulder and frowned in mild surprise at the cadre of lithe golden figures coming up behind him. The Sisters of Silence moved in quick lockstep, maintaining coherent fire corridors and combat discipline with an efficiency that he had only previously seen among his brother Astartes.
It was difficult for him to tell the women apart. Their armour was polished to a glittering sheen, unadorned by any brash sigils or fluttering oath papers like the pale wargear of the Death Guard. Their faces were hidden behind hawkish gold helmets that reminded him of the barred gates to some ancient citadel, no doubt equipped with breather gear that let the unmodified Sisterhood manage the toxic air of the bottle-world. They seemed identical, as if they were forged from some mythic mould by the Emperor's hand. He wondered idly if normal men might view the Astartes in a similar way.
The Sisterhood carried swords and flamers, blades and plumes of fire licked at the jorgall flyers as they dipped into range. Some also carried bolters.
As was their vow in the Emperor's service, the women never spoke, even those speared by needle rounds or struck by arc-fire. They communicated in line of sight using a gestural language similar to Astartes battle-sign, or through a code of clicks over the vox. From the way they crossed the engagement zone, he had no doubt in his mind that they knew exactly where they were going.
As they passed, the Sister closest to him spared Garro a look, and the battle-captain felt a peculiar chill fall across him. That the Sisterhood ranged the galaxy in search of rogue psychics to capture or expunge was widely known, but what was less understood was the manner in which they did it.
Garro had heard that unlike other living beings, these unspeaking women were silent not just in the material world, but also in the ephemeral realm of the mind. There were names for them: untouchables, pariahs, blanks.
He frowned at the irrational nature of thoughts, pushing them away. In the next second, they were forgotten as warning runes blinked inside his visor. Garro caught the sound of shrieking air over razor wings.
He moved as a flight of jorgalli came down upon them. Fast as only an Astartes could be, he slammed his hand into the back of the Sister at his flank and sent her down and away as tenfold claws cut through the air towards them. Garro threw his arm up to deflect the blow and felt the talons slice gouges through his vambrace. The screeching jorgall ripped upwards and into his helmet, tearing it from his neck ring in a bone wrenching impact. He staggered and recovered, bringing his bolter to bear. Garro's gun barked and from the sand the Sister fired with him. None of the flight that had dared to attack them lived to take air again.
The battle-captain grimaced and patted his face, content to find he had gained no new scars from the encounter. Getting to her feet, the witchseeker walked to him and presented Garro with his helmet, ripped back from the jorgall claws. It was badly damaged, but the symbolic gesture was an important one. The woman looked up and inclined her head. With her free hand she touched her heart and her brow. The meaning was clear. My thanks to you. Unsure of the correct protocol, Garro simply nodded in return, and that seemed enough. The women moved on, leaving him behind. It was only as he saw their backs that Garro noticed the plume of dark hair issuing from the Sister's golden helm, and the red aquila etching across her shoulder blades.
He moved down to the core of the fighting, over a dunescape littered with jorgall dead and on rare occasions, fallen figures in pale grey power armour. Each brother perished here ground Garro's rage like stone on stone, for every one of them was worth a thousand of the freakish intruders.
The captain heard the slamming crack of Mortar-ion's Lantern once again, and looked up to see the primarch sweep it through the air like a searchlight, catching aliens