This guy is telling me that he is a sergeant in the army and needs supplies over seas. I want to know the truth. This the third guy that has texted me for supplies for the military.

Sounds like a scam.  Where did you find this person - social media, a friend???  Why would a sergeant in the army need you to send supplies??

Total scam.  US military is the best supplied military organization in the world. Ignore and block the calls. Absolutely do NOT give out any personal information and DO NOT wire any money or give out any financial account numbers.  These scammer like to say they are in the military in some far-off country.  They sometimes use social media in order to work their scams.  Do not fall for it.