United We Stand

United We Stand is a companion perk in Fallout 4.

Obtaining
To gain the perk, the Sole Survivor must reach maximum affinity with Preston Garvey.

The quickest way to achieve maximum affinity is to head to a weapon workshop. Make a save and attach a mod to any weapon. You do not need to build a new mod every time, attaching one from your inventory works fine. Make a save overtop of the previous save after Preston has "liked" this action. Now reload that save, attach another mod, and make another save over top of the previous one.

Each action "liked" will add 15 points to the required 1000 for reaching maximum affinity. Using this technique, with Preston starting at a base affinity of 0 it will required 67 weapon modifications to be attached.

Effects
The player character's Damage Resistance is increased by 20 points and the player character deals +20% damage when outnumbered.