RP stats are usually determined by a plethora of factors, too many to list.
But here is a list of the Empire's strength in 2499, for those who (1 like a very tough challenge (2 are suicidally overconfident (3 are trolls, cheaters or number-wankers.
These stats are now canon!
TERRITORY: 15 full galaxies per universe (Terran Dominion has 3 Universes), average of 300 billion inhabited worlds over 37.5 billion systems(av. 8 planets per system and 10 billion free people per planet) and 1 trillion inhabited moons (av. 4 billion free people per moon). - Per Galaxy
POPULATION: 204 sextillion Free Terrans, 612 sextillion slaves, several sextillion Ghosts. (they who maintain the Drone Worlds)
Drone Worlds: a total of 1200 billion planets have been coverted to Drone Worlds who house the Dominion's gigantic amount of drone forces.
MILITARY SIZE
Space forces
1 Fleet Group per 4 systems
400 Fleet Groups per Galaxy
10 Fleet Groups of the Imperial Guard
8 squadrons of Drone ships (Destroyers and Carriers) per System
12.000 squadrons of Drone ships (Destroyers and Carriers) per Galaxy
Ground forces (25% of Planet forces for Moons. All numbers exclude officers and support personnel.)
Infantry per planet: 2 billion
Airplanes per planet: 700.000
Gunships per planet: 30.000
Helicopters per planet: 150.000
Tanks per planet: 90 million
Other armored vehicles: 60 million
Battle Mechs per planet: 30 million
Stationary cannons per planet: 4 million
Mobile Artillery pieces per planet: 2 million
Tracked Artillery pieces per planet: 800.000
Rocket Artillery pieces per planet: 1 million
Capital Ships per planet: 400
Rocket Ships per planet: 300
Submarines per planet: 480
Aircraft carriers per planet: 128
Drone Tanks per planet: 4 million
Drone Airplanes per planet: 1.5 million
Drone Gunships per planet: 100.000
Drone Helicopters per planet: 50.000
Drone Walkers per planet: 600.000
Drone Battle Mechs per planet: 200.000
Robot Superheavy Troopers per planet: 120 million
MJC Drones per planet: 2 million
Orbital defenses (Orbital Defense Grid)
Ghost Guns: 60.000
Octopuses: 40.000
Gatekeepers: 20.000
Phoenix Battle Stations: 32
Ion Cannons: 40
Quantum Harmonizers: 32
Quantum Cascaders: 8
Kinetic Strike Guns: 100
Planetside defenses (Apocalypse Defense Grid, mainly concentrated around cities but runs a grid pattern over the entire surface area.)
FLAK guns per planet: 500 million
Assault Guns per planet: 60 million
Howitzers per planet: 80 million
MG nests per planet: 120 million
Autoturrets per planet: 50 million
SAM sites per planet: 30 million
Battle Bunkers per planet: 18 million
Missile silos per planet: 20.000
The no man's land around the Apocalypse lines is littered with undetectable fusion mines.
Super Weapons (In order of destructive force, top to bottom) (excluding the units carried by Starfleet)
Kinetic Strike Guns: 120 per Planet, 80 per Moon
Ion Cannons: 30 per Planet, 12 per Moon
Quantum Harmonizers: 4 per Planet, 2 per Moon
Quantum Cascaders: 2 per Planet
Supernova Missiles: 96
Quantumnuclear Missiles: 800 per Planet, 200 per Moon Vanquisher: Only 9 of these exist. They are intergated on Purifier Super Dreadnoughts.
Drone Planets
Infantry per planet: 2.700.000
Airplanes per planet: 30.000
Gunships per planet: 3.000
Helicopters per planet: 9.000
Tanks per planet: 60.000
Other armored vehicles: 400.000
Battle Mechs per planet: 100 million
Stationary cannons per planet: 10 million
Mobile Artillery pieces per planet: 0
Tracked Artillery pieces per planet: 0
Rocket Artillery pieces per planet: 0
Capital Ships per planet: 0
Rocket Ships per planet: 0
Submarines per planet: 0
Aircraft carriers per planet: 0
Drone Tanks per planet: 80 million
Drone Airplanes per planet: 50 million
Drone Gunships per planet: 4 million
Drone Helicopters per planet: 25 million
Drone Walkers per planet: 60 million
Drone Battle Mechs per planet: 45 million
Robot Superheavy Troopers per planet: 600 million
MJC Drones per planet: 1 billion
FLAK guns per planet: 1.5 billion
Assault Guns per planet: 200 million
Howitzers per planet: 160 million
MG nests per planet: 0
Autoturrets per planet: 500 million
SAM sites per planet: 300 million
Battle Bunkers per planet: 0
Missile silos per planet: 300.000
Drone Destroyers: 600.000
Drone Carriers: 400.000
Kinetic Strike Guns (groundside): 2000
Kinetic Strike Guns (orbital): 5000
Ion Cannons (groundside): 40
Ion Cannons (orbital): 100
Quantum Harmonizers (groundside): 12
Quantum Harmonizer (orbital): 30
Quantum Cascaders (groundside): 4
Quantum Cascaders (orbital): 8
Supernova Missiles: 500
Quantumnuclear Missiles: 200
Ghost Guns: 40.000
Octopuses: 10.000
Gatekeepers: 25.000
Phoenix Battle Stations: 200