This archive tracks four layers. A record present in 2 of them (M41, IND) is silent in the rest, and says so.
The Horus HeresyM30–M31
[RECORD LOST]
No record for this location in The Horus Heresy.
Age of the ImperiumM32–M40
[RECORD LOST]
No record for this location in Age of the Imperium.
The 41st Millenniumpre-Rift
imperium
Penal world; home of the Savlar Chem-Dogs
Once a mining world notable only for the rich chemical deposits on its moons, Savlar failed its tithes and was made a penal colony in M39: one huge prison of megacells, gaols and prison sinks under a noxious, volatile atmosphere, its surface covered in toxic wastes, ruled in practice by gang-bosses and supplying raw material to neighbouring civilised and forge worlds. An armed uprising led Judge Callistar to raise the convicts as the Savlar Chem-Dogs, and six regiments of them went to the Third War for Armageddon, where their rebreathers and their greed for loot suited the underhives.
Era Indomituspost-Rift
imperium
Penal world; struck by a Chaos Balefleet
Still the Imperium's prison world and the recruiting ground of the Chem-Dogs, whose regiments fight on in the wars of M42. During the Arks of Omen campaign a Chaos Balefleet attacked Savlar and wreaked havoc on the planet. In Chem Dog it is the convicts' home, remembered and talked about rather than visited.
Contested record
Position: the Third War for Armageddon campaign website (via Lexicanum Savlar and Savlar_System) puts the Savlar system 'just over a hundred light years from Armageddon', while Codex: Imperial Guard 5th Edition's galaxy map (via Lexicanum Savlar, Conflicting sources) places Savlar 'in the border regions between Segmentum Pacificus and Segmentum Solar, nowhere near Armageddon'. This record follows the textual statement, which yields an actual position, and says so rather than silently picking one.
Position
Map frame: 329.02, 469.83 in the archive's 0–1000 disk space (core at 500, 500).
Distance from the core: 174 units ≈ 18.5k light years, west of the galactic core.
Height above the disk plane: 6.8 units — invented thin-disk jitter, deterministic per record. No published source gives any location a z coordinate.
System: Savlar System
Books set here
1 title in the reading tracker touches this record. Titles link out to the tracker.
Every fact in this record, and where it came from. Editorial derivations say so.
identityhigh
wh40k.lexicanum.com/wiki/Savlar (read directly in a browser on 2026-10-02): 'Savlar, also known as Savlar Penitens, is an Imperial Penal World orbited by dead moons. It is a toxic hellhole infamous for its Imperial Guard Regiments, known as the Savlar Chem Dogs'; its overview of gang-bosses, megacells and off-worlders called 'the Free' is cited to Chem Dog (Novel) chs 2, 4 and 9. https://wh40k.lexicanum.com/wiki/Savlar_System lists Savlar as its only known planet. NAME-COLLISION CHECK: Lexicanum full-text search for 'Savlar' returns only this world, its system and its regiments; no index record uses the name.
book-joinmedium
MENTIONED for Chem Dog (astra-militarum::am-main::16): the Chem-Dogs' homeworld, described in the novel (Lexicanum Savlar, chs 2, 4, 9) and named in every official account of it ('the Savlar Chem-Dogs', Warhammer Community f6qxkgi6, ngdxmygg, mqsbmkuf). No permitted source puts a scene there.
segmentummedium
SOLAR, with the conflict written out in `disputed`: Lexicanum Savlar_System 'located just over a hundred light years from the Armageddon System' (Third War for Armageddon campaign website), and Lexicanum Savlar 'regular shipments have come to Savlar from across the Armageddon Sector'; Armageddon is Segmentum Solar in this index. Lexicanum files both pages under 'Segmentum Unknown' because of the Codex: Imperial Guard 5th Edition map, which puts it on the Pacificus/Solar border. This dataset takes positions from textual and relational lore, not from tracing map images (docs/SCHEMA.md), as with Elysia; medium because a codex map disagrees.
classmedium
wh40k.lexicanum.com/wiki/Savlar: DEAD, from the terrain words on 'a toxic hellhole', 'shrouded by a noxious and volatile atmosphere while its surface is covered in toxic wastes', a world-sized penal facility 'orbited by dead moons'. Painted like Krieg, the other toxic-wasteland Guard homeworld in this index. The infobox tags (Penal World, Mining World) were deliberately not read into the class: neither is a look; `hive` was refused because its population lives in prisons and mines, not hive spires, and `desert` because nothing describes sand.
gposlow
inferred: canon publishes only a distance, 'just over a hundred light years from the Armageddon System' (Lexicanum Savlar_System, citing the Third War for Armageddon campaign website), and no bearing. At this frame's 106.4 ly per unit that is one unit, so the MAGNITUDE is canon; the BEARING is editorial: Savlar is set one unit from armageddon [330, 470] directly away from the core, at [329.02, 469.83], because Elysia already sits one unit from Armageddon toward the core, and the opposite bearing keeps all three markers selectable (Savlar to Elysia is 2 units). Z 6.8 is the zPolicy value (compute-z.mjs savlar 329.02 469.83), not a hand-picked number.
erashigh
m41 and indomitus only. m41: Lexicanum Savlar §History (converted to a penal colony in M39; Judge Callistar's uprising; deployment to the Third War for Armageddon) and Lexicanum Savlar_Chem_Dogs (998.M41, six regiments and two of Chem-Riders sent to Armageddon's underhives). indomitus: Lexicanum Savlar 'During the Arks of Omen Campaign, Savlar was attacked by a Chaos Balefleet ... the Balefleet wreaked havoc on the planet' (Arks of Omen: Abaddon, pg. 33), and Savlar_Chem_Dogs' M42 campaigns (Argovon, Charadon, Season of Blood, Fourth War for Armageddon). The Night Lords raid on Hive Apraxis is undated and is left out.
no-system-surveyhigh
No systems/savlar.json is authored: Savlar is a MENTIONED join, and the survey tier is reserved for primaries (as Elysia). What canon gives about the system: Savlar is its only known planet (Lexicanum Savlar_System) and it is 'orbited by dead moons' whose chemical deposits it was once mined for (Lexicanum Savlar). Upgrade candidate if a book is set there.
systemIdhigh
savlar — Lexicanum Savlar_System. No survey file exists, so the map synthesises the system.