Despite SACT originating as a black-ops unit under the US government, Fuse’s invasion has pushed them further into the public eye. They’ve expanded their numbers in other parts of the world and made unlikely allies with other groups, such as the Plumbers.
The mass of resources from SACT helped rapidly establish the various bases and set up connections with the communities in both the City and Suburb areas. As a result, the Fusion Fighters were able to act faster as a single, unified army rather than an alliance of separate forces, and brace the public for their own roles adjusting to the war and aiding their efforts to defend Earth. SACT also supplies the majority of armed ground vehicles to transport both goods and soldiers alike.
Since their past expertise involved capturing aliens for Area 51, a lot of them study fusion monsters. One of their main objectives is to create a facility where fusion monsters and fusion can be examined/interrogated in a controlled environment. However, due to Fuse’s strong will over his forces, it’s a difficult goal.
Most SACT agents are very devoted to saving Earth and it’s people. To them, failure is not an option and they’ll look after civilians as much as their fellow soldiers. However, amongst other differences, this is a major issue between them and the Plumbers, who are more willing to give up on the Earth in view of the conflict with the universe in mind.
SACT is probably one of the strictest divisions, leading most of their forces in a by-the-book manner. This means that they’re pretty organized and work better with larger forces, but can sometimes struggle working with the more free-spirited independent agents as much as they do with the Plumbers.
In a strange contrast, Ben Tennyson has surprisingly gained a bit of favor with some SACT agents due to this devotion protecting Offworld Plaza and good leadership skills--albeit looser and more off-the-cuff than some of them would prefer. As a result, he acts as a good middle-man between them.
Some SACT agents will instruct intermediate training, preparing soldiers to fight in larger battles further away from the home-front or in specific cases where an individual wants to advance to gain access to specific types of weaponry/gear.
FusionFall Bases and Outposts Headcanons: Hunter’s Crest
After the Battle of Hero’s Hollow, the Fusion Fighters were pushed back to Hunter’s Crest--the remnants of an ancient fortress and the mountain range between the two areas helping barricade the latter. Once just a SACT camp, the outpost now finds itself as one of the last surviving barriers between Fuse and his conquest over the whole of the Darklands.
With the high traffic of Fusion Fighters passing through and after the loss of Hero’s Hollow, Hunter’s Crest has a problem boarding people: Since the outpost was originally just a camp, most Fusion Fighters are required to stay in tents until a more permanent set-up can be established.
To help solve this problem and strengthen the outpost overall, the Fusion Fighters there have attempted to reinforce the old fortress. However, with fusion monsters constantly pushing in on their location, it’s hard and tiring work that’s been setback plenty of times.
Losing at Hero’s Hollow meant more than just a shift in numbers: It also meant a shift in purpose. Formally focusing on research, the outpost now devotes itself to holding its ground against Fuse’s army and seeing how much they can push back to start regaining territory. The outpost, however, is still run by the SACT agents who first established it.
Much to everyone’s chagrin, the outpost was also tasked with keeping an eye on Demongo--who no one trusts to this day. If it wasn’t for his fighting prowess--despite however much power he lost to his Fusion-self--the commanders there would’ve put up a bigger fight to have him stationed literally anywhere else. He might help keep the place safe from fusion monsters, but the Fusion Fighters still intend to sleep with their eyes open.
A small team of Fusion Fighters is tasked with search-and-rescue duty. Some of their numbers went missing in the initial battle, and now there are always losses as much as there are victories in the area. While it probably means that those soldiers fell into Fuse’s hands, it’s still better to have someone keep looking in case it is just a loss of communications or similar problem.