Yes he is. He is under code name BasePlate
no
no, he is scottish
YES!
No he's only in COD4, mw2 and mw3
Capt. Macmillan was old even in COD4, and he is not in MW2.
For a more detailed explanation, refer to the link below: http://www.giantbomb.com/macmillan/94-1195/ Aside from that, he gained his fame more-or-less just because of his memorable role in the game.
Captain MacMillan
Yuri was shot by Makarov while attempting to save Captain Price in the final mission of MW3.
Kirkpatrick Macmillan invented the Macmillan bicycle.
Donnie MacMillan goes by Donnie MacMillan.
Will MacMillan is 6' 2".
Donnie MacMillan's birth name is Donald Stewart MacMillan.