@Ex, go ahead and write a Codex entry for the Oakridge Military Academy Rank Structure.

Oakridge is not funded by the government, they are entirely independent, which is why they have to fund any and all external military support. Oakridge has one or two aircrafts themselves, but fuel and ammunition is acquired elsewhere. This is why they charge a symbolic sum when their soldiers call in heavy and expensive support. However, whenever WARG soldiers are in the field, they come by or often work with other military forces funded by the government or city-states, and can call on support through them. It's only when there is no other options and the soldiers have to call support though the academy that they have to help pay for the fireworks.