Colonial Fleet Prior to Second Cylon War:

The Battlestar Fleet- (120 Carrier/Battleship Hybrids)

From The Miniseries, William Adama tells Lieutenant Kara Thrace when she's released from the brig, "We lost 30 battlestars in the opening attack." She responds, "That's a quarter of the fleet." This establishes that there were approximately 120 active battlestars in the Colonial Fleet at the time of the attack.

* Mercury Class Battlestar (Approx. 40)
* Valkyrie Class Battlestar (Approx. 40)

* Unknown Class Battlestar (Unknown No.) Galactica Was Last Of It's Kind This Could Mean With No Networking Or Of It's Class.

* Carrier Vessels Name Of Class May Be PathFinder (Approx. 20) Which Were Smaller Than The Galactica Class And Used For Heavy Troop Movements

Also Included Within The Fleet Make-Up Were Hundreds Of Support Ships Such As:
Destroyers
Scout Ships
Frigates
Mining Ships
Military-Grade Space Park Ships
Transport Ships
Merchant Ships

Also included are hundreds of Raptors and Vipers; Which were organised in Squadrons and assigned to the Battlestar Fleet.

Battlestar Groups traditionally consisted of two or three Battlestars; along with their Viper and Raptor Squadrons. The Battlestars were supplemented with some of the various Support Ships (Mentioned Above).

Confirmed Battlestar Groups Thus Far Are:

BSG-75 (Of which Galactica is a Member)
BSG-62 (Of which Pegasus is a Member)
BSG-41 (Of which Valkyrie is a Member)
BSG-39 (Of which Triton is a Member)

Other Battlestars listed from the Re-Imagined Series are:


Athena
Atlantia
Columbia
Erasmus
Night Flight
Solaria
Triton
Mercury

A bit of information about Battlestars Galactica, Pegasus And Valkyrie

Galactica:

Race: Colonial
Type: Military
FTL: Yes
Propulsion: 6 Sublight Engines
Crew: Approximately 2,650 Before Attack, After Battle Of New Caprica 3800(Approx)
Transports: 8 To 16 Shuttles
CO: Admiral William Adama
XO: Saul Tigh
Role: Carrier/Battleship Hybrid
Weapons and Armaments: As many as 506 point-defense dual Kinetic Energy Weapons, 24 primary dual Kinetic Energy Weapons, at least 12 missile tubes capable of firing conventional and nuclear missiles

Available Spacecraft:

Vipers: Prior to the arrival of Pegasus, Galactica has at maximum thirty-four Vipers, of which at least six are Mark VIIs.
Galactica receives additional supplies from Pegasus since her arrival that helps in repair and refurbishment of her original fighter complement; more recently, she receives new Mark VII Vipers built aboard Pegasus using raw materials mined from an asteroid and the advanced battlestar's Viper construction facilities ("Pegasus", "Scar").

Raptors: The number of Raptors available to Galactica is portrayed inconsistently. The current assumption is that the battlestar has at least five Raptors, having left Ragnar Anchorage with at least eight.

Other Craft: * Galactica currently possesses two Heavy Raiders. One is hit by Galactica's defensive fire and crashes into the starboard flight pod with unknown damage (Scattered). The other returns in operational status from Caprica (Home, Part I). One of Galactica's Heavy Raiders is relieved of its FTL navigation system for use on the rescue mission to Caprica (Lay Down Your Burdens, Part I).
* A second Raider is in Galactica's possession after Daniel Novacek's "escape" from a basestar, replacing the one retrieved by Kara Thrace and lost during the quest for the Arrow of Apollo (Hero).
* An experimental stealth fighter, the Blackbird, is constructed using spare parts (Flight of the Phoenix) and used in a critically successful reconnaissance mission to explore the nature of what comes to be known as the Resurrection Ship. The Blackbird is later destroyed after completing her last mission during the Battle of the Resurrection Ship (Resurrection Ship, Part II).
* Galactica possesses fuel tankers used to supply fuel to Vipers and Raptors in flight wit