If india gets contested can it still have troops and the like placed there?

thanks for the prompt and correct response.  :-D my friend will be  :x    :lol:

ok. my friend and I got into a BIG discussion over this. Can a plane leave a contested area to fly into another battle to boost artillery? and then land back into a contested area? the rules state a plane can leave from any area contested or not,but did not say "it could partake in a battle "I said it could he said it could not.  what is the rule yes or no.?