Boyfriend in the army

Me and my boyfriend haven't been together long but he's sending his application off soon to join the army, he wants to do architecture in the army. He will be on the front line sometimes and I know he has training to do before he goes anywhere but I'm so scared if he gets hurt, finds someone else, being apart for long amounts of time and even though he hasn't sent his application off yet I'm so anxious and it's worrying me. I was just wondering if anyone could share their experiences or give me tips and advice? 💖