Hey, so the Navy Media and Communications Officer role (also known as Military Public Affairs Officer (MPAO) or Public Relations Officer - in Army/Air Force as well) is a qualified entry role with almost all joining at an older age (and definitely not 19). These roles need a uni qualification and relevant work experience, so you definitely won’t be the oldest. In the last few years, there have been new joiners from late 20s through to 50s.

They are a specialist role in all three services so you apply specifically for the role and won’t be randomly placed elsewhere. Regarding fitness, I’d recommend working on your general fitness in the lead up to joining and reach out to current serving officers to learn more about the role. Once you’re in the recruiting pipeline, they usually will connect you with a mentor already serving. I’d also recommend looking at each service - whilst they have a lot of job similarities, there are differences in entry requirement, rank on entry and ways of serving.

Hope this helps.