Being the only guy on the team having nearly the same qualifications as a medic would constantly lead Axel to overworking on missions; often being treated like a medic instead of a soldier...

Axel hated it at first, but he had gotten used to it after a certain number of missions,but that doesn't mean that he liked that

Axel was patching up his own wounds after a hard operation when he heard Ghost yelling for him. “"Axel, get your ass up and go help Johnny!”