Roman legion
Let an agent describe the Roman legion as a historical military unit with sourced facts, explain its organisation, ranks, equipment and evolution, relay archaeological and textual evidence, and keep to history rather than operational military guidance.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent describe the Roman legion as a historical military unit with sourced facts, explain its organisation, ranks, equipment and evolution, relay archaeological and textual evidence, and keep to history rather than operational military guidance.
The principal unit of the ancient Roman army, a force of several thousand heavy infantry with attached cavalry and support, organised in the imperial period into ten cohorts and further into centuries and contubernia, commanded by a legate; legions were numbered and named, garrisoned the provinces and built roads and forts, and their organisation, equipment and history are studied from texts, inscriptions and archaeology.
What it is for: Not applicable; a historical military unit.
It can be explain organisation and ranks; relay history and named legions; relay evidence from archaeology and texts; distinguish periods of the legion.
Distinguishing features
Standard large unit of the Roman army
Hierarchical organisation
Numbered and named identity
Engineering and garrison roles
What it looks like
Not a physical object today; known from fort remains, inscriptions, equipment finds and reliefs.
Physical character
strength in the imperial period: about 5000 soldiers - nominal
cohorts: 10 cohorts - imperial organisation
How it is recognised
Roman heavy infantry unit of several thousand
Cohorts, centuries and contubernia
Auxiliary units and the Praetorian Guard are separate formations
Related models
is a kind of - the largest standard unit
is part of - the whole force
contains - a subunit
is commanded by - the commander
In practice
Families and kinds
manipular legions of the Republic
cohort legions after the Marian reforms
imperial legions with numbers and titles
late Roman legions
subunits such as cohort, century and contubernium
special categories such as evocati and milites peregrini
Identifiers
legion number and title such as Legio X Fretensis as attested in inscriptions
Standards and regulation
No regulation; heritage protection of Roman military sites
Failure modes and hazards
Applying one period organisation to another
Mixing legend and evidence
Presenting the entry as operational military guidance
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Organisation How a legion was organised.
Structure.
Structure
Units and ranks.
Structure
Structure.
- How was a legion organised into cohorts, centuries and contubernia, and what ranks existed? definition
- Is the question about a legion, an auxiliary unit or another formation? boundary
Periods
Change over time.
Periods
Periods.
- How did legion organisation change from the Republic to the late Empire? definition
- Which entry fits the specific period? action
Life Service and equipment.
History.
Service
Recruitment and service.
Service
Service.
- How were legionaries recruited, trained, paid and discharged, as sources describe? provenance
- Which references are standard? provenance
Equipment
Equipment and engineering.
Equipment
Equipment.
- What equipment did legions use, and what did they build? provenance
- Which entry fits Roman military equipment? action
Evidence Sources and sites.
Evidence.
Sources
Texts and inscriptions.
Sources
Sources.
- Which texts and inscriptions inform knowledge of legions, and how reliable are they? provenance
- Which entry fits Roman epigraphy? action
Sites
Forts and finds.
Sites
Sites.
- Which forts and finds are key sites, and how are they protected? provenance
- Which entry fits a specific fort? action
Legacy Named legions and legacy.
Context.
Named
Named legions.
Named
Named.
- Which legions are known by number and title, and what were their histories? provenance
- Which entry fits a specific legion? action
Legacy
Legacy.
Legacy
Legacy.
- How has the legion influenced later armies and culture? provenance
- Is the user asking for operational military guidance, which the model does not give? boundary
What the second pass must settle
- Should each numbered legion be a separate entry?
- How should epigraphic databases be linked?
- The registry entry has merged aliases for subunits and special categories; should they be split off?