OCU Front Base on Huffman Island is the OCU’s main foothold on the island in the Front Mission setting, where Huffman Island is shared between the OCU and the USN.

What it is

It is not a real-world place; it is part of the fictional geography of Front Mission , centered on the conflict over Huffman Island.

Where it sits

The sources I found confirm that Huffman Island is divided between the two powers, but they do not give a precise in-game map coordinate or a more exact “front base” street-level location for the OCU base.

Best practical answer

So, in plain terms: OCU Front Base is the OCU-controlled military base area on the OCU side of Huffman Island , within the island’s contested war zone.

Quick note

If you were asking about a specific mission, game version, or map screen, that could narrow it down further because Front Mission entries often reference different bases and sectors on Huffman Island.