I would also add...

The headquarters' mission statement emphasizes interagency cooperation. AFRICOM "in concert with other U.S. government agencies and international partners, conducts sustained security engagement ... to promote a stable and secure African environment in support of U.S. foreign policy."
That had we even had symbolic support from the Embassy, we could have accomplished far more. Even in Sub-Sahara's heyday with 7 countries of accreditation, we as US Military felt out of place at the country team. Direction and financial support is but one minor element when implementing 7 million dollars with a 6-man team (with a hamstrung embassy of over 500 official employees and 2,000 locals)

Interagency cooperation — particularly State Department integration — is absolutely essential. That's why AFRICOM's deputy commander is a career Foreign Service officer.
I'd rather not comment on that one at this time