The first 'Modern Olympics' were definitely a lot less formal than today.
You can read an old post about how a couple of Americans just showed up and shot here:
https://thefiringline.com/forums/showthread.php?t=496743&highlight=olympics
You can read an old post about how a couple of Americans just showed up and shot here:
https://thefiringline.com/forums/showthread.php?t=496743&highlight=olympics