What are some jobs I could do in the army/military that has to do with explosives?

I can not make up my mind whether to join the army or the military. I know the military is harder so I think I'll go with the army but what are some jobs I can do that has to do with detonating, using, defusing, etc. with explosives? They have always interested me all my life and they seem to be my pion. Please list a few jobs and everything about them. Thank you.