Soldier called me a POG and told me to leave the Commissary. What action can I take?

Note: My friend Carlos is in the Coast Guard and sent me this question last night. He said he's not on RP due to OPSEC (whatever), so he asked me to ask this on RP on his behalf. He is pretty hell bent on getting this Soldier punished. Anyway, let him know your thoughts on the below.

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I’m in the Coast Guard and have been active duty for 6 years. I’m stationed in Hawaii right now. I was up by Schofield Barracks and went on base there, and went to go shop for a few things at the Commissary. I was waiting in line for some fresh meat and there were 2 Army soldiers also in line, in front of me. They were looking at me and saying things to each other. It looked like they were laughing at me. I heard one of them refer to me as a “POG” which is a slang term I am familiar with from social media stuff. I said to them “Excuse me, I heard what you just said, and I feel disrespected.” I was just trying to stick up for myself. One of the soldiers then squared up to me and said “Yeah, I did call you a POG. Because you are a POG. You need to up and leave here – this is an Army Commissary.” A few other people in line heard this and started laughing. I felt so angry that I just left the building.

I know the soldier’s last name from his top, and I would recognize his face. What actions can I take to report him to his chain of command? What other advice do you have?