here is the fleet  halsey bring to atlas it start small but slowly build up

any way here it is

Phoenix-class colonial support vessel Modifried in to a Phoenix-class carrier 

there is only 1, and 1 only aka spirit of fire as it cost to much to make this ship and it took many years to make it

Length 2.5 kilometres (8,200 ft) 

Width 800 metres (2,600 ft) 

Mass 44,000,000 metric tons

weapons: 3 22B6R3 MAC Batteries, 10 11A2R1 naval coilgun batteries, 24 M42 Archer missile pods and 40 M800 Rampart point defense guns

.

Stalwart-class light frigate

there are around  12  of them 

Length: 478 meters (1,570 ft)

Width: 152 meters (499 ft)

Height: 112 meters (367 ft) 

Armament: 1 56A2D4 Mark II light MAC, 16 M58 Archer missile pods, 76 M340A4 Streak missile pod, 6 M870 Rampart point defense guns, 52 M710 Bulwark point defense guns

it also has a few drop pods

.

 Charon-class light frigate

there are around 12 of them 

Length: 490 meters (1,607 ft)

Width: 160 meters (510 ft)

Height: 139 meters (457 ft)

Armaments: 1 Mark II, Light Coil – 83B6R3/MAC, 10 M58 Archer missile pods, 4 M870 Rampart 50mm point defense guns

it also has drop ships, drop pods, fighters and more

.

 Paris-class heavy frigate

there are around 12 of them 

Length: 535 meters (1,755 ft)

Width: 199 meters (652 ft)

Armaments: 1 light 65P8V1 Magnetic Accelerator Cannon, 3 M2475 Shiva nuclear missile silos, 26 M58 Archer missile pods, 12 M870 Rampart point defense guns 12 M2950 Harpoon nuclear missile silos

it also has drop ships, drop pods, fighters and more

.

Pelican drop ship

.

Single Occupant Exoatmospheric Insertion Vehicle better known as a Drop pod or ODST drop pod

.

The D20 Heavy Lift Vehicle ( can also deploy fire base)

.

Falcon

.

Hornet

.

AV-49 Wasp

.

saber Class fighter

.

Scorpion tank

.

M12 Light Reconnaissance Vehicle (LRV), colloquially referred to as the Chaingun Warthog or just Warthog

.

M12G1 Light Anti-Armor Vehicle (M12G1 LAAV), commonly known as the Gauss Warthog

.

the M12R Light Anti-Aircraft Vehicle abbreviated as M12R LAAV and commonly referred to as the Missile Warthog, Rocket Warthog or Rockethog

.

M831 Troop Transport Warthog