However, they seem to have made peace with it fairly quickly; the "Dr. Halsey's personal journal" booklet which came with the Limited/Legendary editions of Halo: Reach and Halo: Contact Harvest contain a fair number of direct references to Halo Wars.
Executive Meddling: Why the game became a Halo title. The order to turn it into one was expected to speed up production, but actually pushed back development a full year, since it was more complicated than merely replacing all the units with Halo models.
Kim Mai Guest (Mei Ling) is Professor Ellen Anders.
David Sobolov (Blackheart) is Arbiter Ripa 'Moramee.
Mark Worden (Iron Man) is the Brute Army Commander.
Throw It In: Graeme Devine, the lead writer, made an entire press guide for the planet Arcadia. Bungie's writer Joseph Staten liked it so much that he included a mention of Arcadia in Halo: Contact Harvest.
What Could Have Been: The control scheme was designed separately for an original property, yet undecided at the time. Microsoft was not confident about the sales of a new series as a console RTS, so they demanded for it to be a Halo game instead.
Incidentally, this game isWhat Could Have Been for the Halo series as a whole. It was originally planned as a strategy game when the game was still anticipated to arrive on Macs.