Should all US male citizens be required to serve 1 full term (4 years) in any branch of service upon completion of High School?

I know Israel has some sort of requirement. I was wondering we in the military thought. It is my opinion, that a two year requirement would be beneficial on many fronts. I think the average citizen would pay more attention to the politics of our nation, and therefore be more educated on who they vote for. What are your thoughts?