Yes, Army surplus harness. Don't use neats foot oil unless you can find the pure stuff. The stuff you buy at the feed store usually has been cut with kerosene or some such, and it will ruin the already weakened threads in the sewing. Saddle soap is good. I'd check the internet and see if there is anything listed for preserving old leather, that might me easier than saddle soap. Did you get a collar with the harness?