Naval Order of Battle

The standard chain of command flows from the largest strategic formations down to individual ships and squadrons. A typical Sector Group may contain multiple fleets. Each fleet is composed of battle groups, squadrons, and individual ships. This structure allows for both large-scale strategic operations and precise tactical execution.

The Numbered Fleets

Numbered are the highest formation in the Navy Order of Battle. They are formed by merging multiple Sector Groups under Oversector Command. These massive formations are used for large-scale regional or strategic operations spanning multiple sectors and are often commanded at the highest levels by their respective Grand Moff.

Sector Group

Sector Groups are the primary naval forces assigned to each sector. They are responsible for maintaining Imperial control over their assigned region and work in close coordination with the corresponding Sector Army. A standard Sector Group is expected to contain at least 24 Star Destroyers and another 1,600 combat starships.

Fleet

Common fleet deployment types included superiority fleets, assault fleets, and bombard fleets. Other examples of formations that a fleet might have taken included a deepdock fleet, support fleet, or ordnance fleet.

Superiority fleets maintained space superiority in sectors with "four or fewer worlds confirmed hostile to the New Order, and no more than 16 additional worlds with confirmed significant hostile elements". With six Imperial-class Star Destroyers and almost 400 other starships, a superiority fleet was presumed to be a sufficient force for relatively calm sectors.

Assault fleets transported huge numbers of Imperial Army and Navy troops to coordinate ground operations, while maintaining space superiority around the targeted systems.

Bombard fleets contained an average of 416 ships, allocated between two system bombards and two force escorts. Bombard fleets were assigned to high-threat, low-value sectors where the Empire had determined the probability of repressing the Rebellion in the sector to be less than even.

Deepdock fleets had a total of 280 support vessels and one escort force, and are primarily utilized to support two space-based shipyards.

Support fleets were considered the most important non-combat formations in the Navy, charged with securing the logistics of the entire Empire. Support fleets had over 500 small vessels, most of them container ships.

Systems Force

A Systems Force combines several squadrons (nominally ~90 ships). In general, the systems force had at least six possible pooling situations:

Force Superiority pooled at least three battle squadrons and a light squadron. With a minimum of three Imperial-class Star Destroyers and nearly 90 other starships, force superiority's mission was to achieve space superiority in a given system.

Force Escort protected crucial commercial shipments, economically essential space installations or facilities, and hunted down harassing pirates. With at least two heavy squadrons and two light squadrons, force escort was the most flexible of the force pools.

Transport Force was charged with deploying various troops from other branches of the Imperial Military, including Army troopers and even Stormtroopers.

System Bombard was charged with carrying out planetary bombardment missions. It was composed of three bombard squadrons and one light squadron.

Force Technical Services was charged with transporting mechanical specialists quickly and safely wherever they are needed most.

Force Support was tasked with resupplying various Imperial depots, including planet-side depots, across the galaxy.

Squadron

A Squadron is the smallest independent operating unit. Composed of several Lines, a squadron ranges from 14 to 60 ships. It is the largest concentration of ships normally assigned to a single system. There are four main types:

Light Squadron — Patrols safe areas with skirmish and reconnaissance lines.

Heavy Squadron — Engages known enemy presences with heavy attack lines.

Battle Squadron — Built around an Imperial-class Star Destroyer for offensive operations.

Bombard Squadron — Subjugates rebellious worlds with Torpedo Spheres.

Line of Battle

The Line of Battle (or simply a Line) is the smallest organizational unit used for space combat. It consists of 4–20 starships depending on the type. The Imperial Navy outlined seven main types of Lines:

Attack Line — Aggressively engages enemy starships (3 heavy cruisers or 6–8 light cruisers).

Heavy Attack Line — Stronger version (4–8 medium or heavy cruisers, sometimes including Victory-class Star Destroyers).

Reconnaissance Line — Gathers intelligence (2–4 light cruisers with surveillance gear).

Pursuit Line — Chases retreating enemies (4–10 fast light cruisers or frigates).

Skirmish Line — Harasses capital ships and supports starfighters (4–20 corvettes or small vessels).

Troop Line — Deploys Imperial Army units (Corps Transports + escorts).

Torpedo Line — Penetrates planetary shields (up to 2 Torpedo Spheres).

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