You know, one day someone will look at the sci-fi of the 20th and 21st century and think something like

"Military shuttles being led by the navy? 

Dafuq."

Dunno about even that since I could see the land military and navy combining.

[kidding kidding]

As said in the OP, the higher up in the coalition you intend to be, the more I expect you to play.

May need to fine tune the policies though.