in the interview be honest and tell the truth , as well be prepared, He or She will ask you some pretty important ?'s, like why you want to join, what your plans are , and what the trade that you are applying for involves, I applied for artillery and before i went for my interview i read every thing i could find about it, he was surprised about how much i knew, it shows them you are very interested and shows that you are responsible. good luck, its not that bad like i said just be prepared .