Simple question; who is M. Koiter? In the cinematic "Fire and Fury" Raynor walks up to a dead marine, bends down, picks up his dog tag, and looks at it. The Name on it reads "M. KOITER"... At first it doesn't seem important, but later in the cinematic Raynor talks about things worth fighting for and takes another long look at the dog tag, as if to say it was someone close or important. The name was never mentioned any other time during the campaign, so I'm at a loss as to who that was.
http://starcraft.wikia.com/wiki/M._Koiter He's a random individual who represents the horror of war. The name is a tribute to a blizz artist who passed away.
Michel Koiter was the twin brother of Rene Koiter, and both worked as artists at Blizzard Entertainment. Michel died of unexpected heart failure at the age of 19, around a year before World of WarCraft was released. If you run around one of the regions in WoW you'll find a burial shrine with the initials M.K. on it, and if you visit it when dead you'll find an angel named Koiter floating by the shrine. http://www.sonsofthestorm.com/memorial_twincruiser.html