gp, I have a chain exactly like that one. IDENTICAL, with US printed on the same tab. That tab is where a swivel was attatched with a ring on the end, like used with animal driven equipment. Mine still has the swivel. Mine was found at a house that is estimated to be 150 yrs old or more. There was lots of chain, including chains like the ones pictured by AQ. They are blacksmith forged. There were also a lot of mule-riggings and farm related pieces. I don't know if the chain is military or not, but I wouldn't doubt it.