Breaking into physical commodities trading at the majors from undergrad

I am currently a freshman at a top target school for finance in the US (think H/W/S) and I am very interested in the commodities space, whether it be at a bank or a physical trading house. I have done some research into the recruitment process for trading at the BBs, but there seems to be less info out there about breaking physical trading at the majors from undergrad. I'm currently in the US but I would be more than willing to relocate to Europe or Asia. Any insight into recruitment timelines, internships to look for, general steps to take (networking, etc.) or anything else would be tremendously appreciated. Thank you in advance for the help!