How do I rotate? iOS

[How do I rotate? iOS]

I am playing on my iPhone 7 with the latest version of iOS and I cannot figure out how to rotate buildings. I see green and gray arrows on a building if I hold down on it but it only seems to let me move the building location and not rotate.  Appreciate the help! 

[Should i buy this game, or should i wait atleast for the beta ?]

I haven't tried multiplayer yet but I've enjoyed trying different strategies on the available single player missions that the Alpha release has. Flying around in the chopper is my favorite experience so far but all the others have been fun as well. Are you a veteran to the ARMA series or would this be your first taste of it?

[Arma 3 FanArt]

Some awesome fan-art in here. If stick figures were considered art, I could possibly include something but I don't think it would fly among these folks. Keep up the good work!