If you are looking for a code structure to use in a story or game mod, here is a sample format for an :
(International Marine Purchasing Association) is a universal coding system used by the shipping industry to standardize the procurement of marine stores. While often associated with general shipping, SpaceMarine Corp. space marine impa code
While "Space Marine" is most famously known as a sci-fi faction from Warhammer 40,000 If you are looking for a code structure