So I have read that it is possible for the minutemen and the BOS to be at war in the game as a supporter of the minutemen. Does anyone know how you create the situation for this?

I have attacked BOS vertibirds multiple times but that doesn't seem to turn the faction hostile.

Danse once got mad because I made the artillery gun at the castle. Also in the BoS storyline there was an option to talk to Preston before the final mission? Might have something to do with it.

I was hoping to be their enemy without joining and without waiting to the last few main quest missions. Maybe join them and start killing people in the BOS?

Well, I think that's be a pretty good way to try to start making them hate you LOL I don't know if it'll make them hate your faction though.

Fastest way is just to kill a named person

Go to the Cambridge police station and shoot it up

That is very true!

I have over 100 Brotherhood Holotags at this point and they aren't hostile. What-ever makes them hostile is a quest event and it's nothing to do with the Minutemen. Probably something related to supporting the Institute or the Railroad.

If you kill anyone with a name, it will turn them hostile.

Ya pay dance and co at the cambridge police station a visit- that gets them nice and pissed

And that can be used to trigger the quest?

Might just coc to the Prydwen, kill Maxson and see what happens. Though I haven't even been to the Police Station yet.

Yeah, I went to the airport and killed a named person (forgot which), and ran off. They hated me, I talked to Preston and he said something along the lines of, "it's time to deal with the Brotherhood."

Killing Maxson will definitely make them hostile.

They were hostile to my fledgling character save (My very first playthrough) because I hadn't discovered Danse or done any of his quests. I guess they just thought I was some kind of raider or wastelander. They just shot at me... just cos.

Yeah but I'm thinking I'll have to be at a certain stage, IIRC there's nobody named at the Airport until the amputee women goes down there and that's during the Brotherhood quest-line which I have not started.

I went after interacting with the Institute, never even spoke to the Brotherhood aside from Danse and I refused to join.

There are a few named, inconsequential NPCs down there, but you might have to look.

This is my situation i went to the Police station and killed Knight Rhys and ran off. Dance and the Scribe were alive still. I have not entered the institute yet and My status is now hostile with the brotherhood. So killing a Named BOS npc WILL make you hostile to the Brotherhood. Went to the airport and they were more than hostile towards me but a well placed artillery strike showed them the folly of trying to invade the commonwealth.

Good to see someone confirm that you can destroy the BoS before the Institute. Wonder how this would affect the Institute and Railroad routes...

How about sneaking and stealing everyone's power armor, then killing them. ROFL. Power Armor for ALL of your settlers. MUHAHAHAHAHA

The BOS isn`t destroyed I can`t reach the airship and Bos patrols still spawn. I think I can just confirm that killing a Named NPC in the police station specifically Knight Rhys WILL make you an enemy of the brotherhood and will create a war between the BOS and the MM. I had a veribird hug the ground and rise up out of a cannon to shoot me in the back after attacking raiders so the BOS is not destroyed even though I attacked the airport and killed anyone I saw. Which I think is good, as the game engine can`t render an entire army anyway so killing off some grunts at a base does not total victory make.

It is nice to see the dynamic of the BOS as the enemy as it creates an interesting situations with random encounters. And watching your turrets attack a veribird is pretty sweet.

Oh, when you mentioned "well placed artillery" that you destroyed Prydwen (as that's how the MM destroy it). My bad...

Bos now hate me as a result of stealing half their power armours and killing a truck load of them , the institute have now told me the bos has to go and the railroad and have ordered me to off des , Preston isn't getting involved , just keeps sending me to mundane settlement problems , how do I trigger him to decide he's against the brotherhood and get those quests up ??

Become hostile with the Institute, destroy the Institute with Minutemen and then you can destroy the BoS with them.

iv got abit of a beomance going with the mm and the institute at the mo , dunno how long it's gonna last