During World War One massive railway guns were used to reach deep behind enemy lines and attack enemy infrastructure with both sides using the massive artillery pieces. In this episode Matt takes a look at some archival footage of America's massive railway guns ranging from 10 to 16 inches. Check out our accompanying article for more information and sources at: https://armourersbench.com/2019/05/19/us-military-railway-guns-in-action/ If you enjoy our work please consider supporting us via Patreon, TAB is a viewer supported, non-monetised channel and any help is very much appreciated! We have some great new perks, check out our Patreon page here: https://www.patreon.com/thearmourersbench The Answer: According to the original footage notes the mystery item is a 60-feet tall captured German field periscope 'claimed to have been used by the German Crown Prince during the war'. Footage: https://catalog.archives.gov/id/24749 Where to find TAB: https://armourersbench.com https://facebook.com/armourersbench https://www.patreon.com/thearmourersbench https://www.instagram.com/armourersbench https://imgur.com/user/ArmourersBench https://discord.gg/DAjRSBc Don’t forget to like, share and subscribe and spread the word!