Marines to guard back to marines?

Graduated boot camp aug 2001 honorable discharge 2005. Got bored at home so drilled with reserve unit, I eventually joined the national guard not really my thing want to go back active duty in the marine corps obtained the rank of sgt, can I go back active duty and keep my rank and not have to go to boot camp again. Thanks for serious answeres, also released from marine corps ready reserve january 2008 guard contract up 2014 apr recieved sign on bonus as well