My offer says specifically "Army". I asked for it, Navy being my last choice (personal preference...).
From my conversations with my MCC and my understanding, it is necessary to look at the bigger picture.
Do you want to accede to a higher rank? Do you want to evolve in your trade? Accept a position outside your comfort zone, aka your preferred CAF branch.
Logistics is similar almost everywhere.
And...
After signing the Terms of Service, we are CAF members.
If CAF needs somebody to cover a position, they will ask you to go there, you can decline the offer and CAF will find somebody else. But, if you are the most competent person at date for THAT position and CAF needs YOU there,
YOU.GO.THERE.
It is not only CAF, all other armies around world are identical.
YOU'RE IN THE ARMY NOW !