How do you become an officer in the US military?

First you must attend college and complete at the least a Bachelors Degree for an Accredited College or University, then you must make sure you do not have a questionable background (no serious law violations), score well on the ASVAB (depends on branch but have at least a 110 GT score), meet the Age requirement (depends on branch). Complete Basic Training/Boot Camp, Officer Candidate School and Job training.