SotSS is a 4x/RTS mod based on the Universe of Freelancer/Starlancer
The Partisan was envisioned as a replacement to the aging Patriot Light Fighter. However eventually the Liberty Navy chose to upgrade the Patriots in service rather than roll out a costly replacement.
The LSF stepped in, bought up the prototypes and the plans and started issuing Patriots to their operatives giving them an excellent light fighter for recon, rapid response and interception missions.
If a LN Admiral plays their cards right they should be able to convince the LSF to lend a few to aid in their operations.