A gathering of Swiss veterans of the American Civil War was suggested by Colonel Emil Frey. He was a Veteran of that War, having served as major in the 82nd Illinois Infantry Regiment, and he was taken prisoner in the battle of Gettysburg. He returned to Switzerland where he pursued a successful career in public life. Between 1892 and 1897 he was a Federal Councilor (Bundesrat), that is a member of the seven-member executive branch of the Swiss Government, being in charge of the Military Department. In October 1898 Captain Casimir Muri sent out a call to Swiss veterans of the American Civil War for a meeting in Lucerne, placed an announcement in Swiss newspapers on January 8, 1899.
"Appendix: Meeting of the Veterans in Luzern, January 29, 1899,"
Swiss American Historical Society Review: Vol. 47:
3, Article 8.
Available at: https://scholarsarchive.byu.edu/sahs_review/vol47/iss3/8