Hey guys, just played my 1st game of 8th edition with my Ultramarines. It was a spearhead detachment with 30 devastators (two grav squads and 1 lascannon squad) as well as some grav centurions. I deployed centrally with two squads to the left and right and two squads to the front and back of Guilliman to get rerolls to hit and wound. Two apothecaries, Cato, and a librarian were with him as well. It was a pretty strong showing, wiping out a Nurgle Daemon list that gave my marines trouble on 7th ed. Did I play the 6" buff correct? Armywide hit and wound rerolls was insane.