FYI: The Marine Corps is a department of the Navy. (The old joke is: Marines need someone to dance with when they're not fighting)
I don't suppose the framers would have foresaw the need for an Air force, but then those that would have amended the Constitution to make it explicit wouldn't have been necessarily wrong to do so as you imply.
The Marine Corps is considered a separate branch of the military. They have their own representative on the Joint Chiefs, their budget is no longer a part of the Navy budget, they are in all respects independent. Something not sanctioned by the Constitution.
I don't suppose the framers would have foresaw the need for an Air force, but then those that would have amended the Constitution to make it explicit wouldn't have been necessarily wrong to do so as you imply.
Of course not. My point has been to refute those who claim that only explicit powers are granted the Executive, Legislative, and Judicial branches of the government. The framers of the Constitution were men of insight. They allowed for the fact that the Constitution had to be broad enough to allow for unforseen future circumstances, which is why the Air Force and Marines can be allowed for under the instructions to provide for the common defense included in the Preamble. Yet sothron fanatics, who see nothing wrong with this, have a cow over other implicit powers that they don't happen to agree with.