Sisters of Battle / Silence- warhammer 40,000 tribute

The Sisters of Silence are the militant arm of the Adeptus Astra Telepathica and are internally referred to as its Departmento Investigates.

The Sisters of Silence have a long history (their organisation predates the Horus Heresy). They are an all female order, in much the same way as the Adepta Sororitas; the major difference is that the sisters are all Blanks.

Recruited from Untouchable stock, the Sisters are anathema to psykers. Their very presence disrupts psychic activity and they are presumed immune to most forms of psychic assault. The main purpose of the Sisters of Silence is therefore to seek out and apprehend psykers. As warrior-investigators they can be involved in all aspects of the capture and transportation of psychic individuals and can almost always be found among the crew of the Black Ships.1

Each Sister swears an oath of silence known as the Oath of Tranquility upon being nominated for Sisterhood; before this, when they are novices, they are allowed to converse normally. Amongst their other duties novices sometimes act as interpreters between senior Sisters and other agents of the Imperium. Full Sisters converse in their own sign-language, but there is at least one example of them being conversant in other forms of sign-communication, such as Astartes battle-signage.2

Sisters of Silence participated in some of the major actions of the Horus Heresy, including the defence of the Imperial Palace. They were perhaps most successful during the assault on Prospero, where a force of Sisters were deployed to provide specialised support for the attacking Space Wolves Legion. Due to their Untouchable nature, the Sisters were proof against the psychic attacks of the defending Thousand Sons Legion and provided a stable bulwark for the assault to be anchored upon.

the sisters of battle-
The Adepta Sororitas (also "the Sisterhood" or "Daughters of the Emperor") is a religious group that was incorporated into the Imperial Cult millennia ago. It is a common misconception that the Adepta Sororitas is the same as the Sisters of Battle, but the latter term technically refers only to the Orders Militant, the best-known part of the organization.

The Adepta Sororitas are an all-woman subdivision of the religious organization known as the Ministorum or Ecclesiarchy. They share with the Inquisition a similar role, policing the divisions of the Adeptus Terra. While the Inquisition's jurisdiction is entirely broad and encompassing, the Sororitas' is confined to heresy and mutation. The Sisterhood is religious where the Inquisition is relatively secular. As the Sisterhood's power extends only over the Adeptus Terra, the self-governing Inquisition remains beyond the Sisterhood's vigilance.

The Sisterhood's Orders Militant are the mailed fist of the Ecclesiarchy, rooting out and mercilessly destroying corruption and heresy within humanity and every department of the Imperium. The Decree Passive rules that the Ecclesiarchy cannot maintain any men under arms. The Sisters, being all women, are exempt from this decre