This paper model is a GTF Hercules, nicknamed "The Big Momma", first introduced during the Great War and flew several successful missions against the Shivans, becoming the mainstay of Terran forces during the Great War, the papercraft is based on the space combat simulation computer game series FreeSpace, and the template was created by Slawek.
The Neo-Terran Front was known to have used large numbers of these ships during their rebellion. The replacement of this class was the GTF Hercules Mark II with increased agility and secondary loadout at the expense of having only four primary guns.
The FreeSpace Reference Bible states that a wing of four Hercules fighters at some point took out a Vasudan Aten cruiser. Since in-game information explicates that the Hercules was designed during the Great War, this cruiser was probably under the control of the Hammer of Light. [Source: hard-light]
You can download the papercraft model template here: FreeSpace - GTF Hercules Free Paper Model Download