Ward Zischke, the command historian for the 88th Regional Support Command, shows off the contents of a World War I-era pack during presentation at the Tomah, Wisconsin Museum. The 100th anniversary of American involvement in World War I is being commemorated for Army units with lineage dating back to that time. The 88th RSC is the legacy unit of the 88th Division which was constituted on August 5, 1917 for service in World War I.