Helping son amend tax return

This is a different question from what I asked in other section.  He's in the military and this was his first year filling a complete return on his own (no longer a dependent).  Well he goof and marked himself as still being a dependent, and we have already changed that on his amended return, but my question is about having supported himself or not.  

 

There is the question about whether he provided more than half is own support for the year.  I would believe this needs to be yes, but he thinks no, since the Army covers his barracks and a lot of his food, etc.  But I tried to explain to him that really falls under his job and since he had a job all year, he should mark yes that he provided more than half is own support for the year.  Is that correct?