Fest is a heavily populated ice world with few wilderness regions - limited exclusively to rugged mountain ranges and deep glacier-filled valleys.
In the years after the Clone Wars, Fest became embroiled in an internal civil war, while simultaneously engaged with a war with Mantooine. The results of that conflict have left Fest ravaged, with the bulk of the population struggling daily for survival.
Independent-minded, the planetary population is home to several rebel groups. Due to the scars of the civil war, the rebel groups are not cooperating. Despite this, the groups have independently thrown the Empire out of the major population centres. The Imperial forces left on the planet are under siege inside fortified bases, and do not venture out. Air and aerospace power of the Empire has been completely neutralized, and Imperial forces in orbit (three bulk cruisers) have been destroyed by a rag-tag fleet of small ships.
The primary faction on Fest is led by Enric Meday, a former member of the local constabulary. He fought in the civil war, and in the war with Mantooine. His rebel group is the largest on Fest, and holds the government capital, with the exception of a fortified Imperial base. His troops walk openly in the streets. He has a small council of senior lieutenants. Valara Streng [female] handles his intelligence duties, and appears to be closest to him. Sayl Murray [M] leads one group of his military forces, and is a veteran of the civil war and the war with Mantooine. Alys Madine [F] leads the other military arm. She is also a veteran of both wars, and it was her victory that claimed the capitol for the group. Raddi Dulius (unknown gender) shepherds their civilian resources, including fundraising, feeding and equipping the military. His subordinates are mostly scroungers and salvagers, but his work allowed the victory in the capitol.
That's the extent of our knowledge, and we have no details on any of the other regional groups, other than they are loosely based on factions that fought during the civil war.
They liberated several Imperial supply caches, which has eased the burden on civilians, and better equipped their troops, but their supplies won't last more than three months.