Horizon Forbidden West

Not to be confused with Rebel Camps, Rebel Outposts are all over the bloody shop in the Forbidden West - at last count, I counted 14 of them! Unlike the Rebel Camps, Rebel Outposts are much smaller affairs, with a group of only 5 or so rebels in them. Maybe a few more. But all you really need to do with the Rebel Outposts is, stand as close as you can get without being seen, bust out your scanner and scan the enemies in the camp until you find the captain. Then, load your Hunter Bow up with 3 arrows (using the “triple-notch” weapon ability), then obliterate the captain as quick as possible. When you’ve taken him down, run in, nab his loot (which will effectively be dog tags that you can hand into the Arena shop) and then run away. You don’t need to kill everyone. Do this to 4 camps and you’ll net this trophy.
Here’s the first 4 Rebel Outposts you will come across:

• The Deadfalls (north of the Barren Light Salvage Camp)
• Jagged Deep (south of Stone’s Echo, south of the Cinnabar Sands Tallneck)
• Plainsong (unsurprisingly, west of Plainsong)
• Stillsands North (south-east of The Base, west of the Stillsands Tallneck)