. . . . . "German WW1 identity tags/disks : background and evolutionary history considering the 1914-18 German Army mobilization and expansion process"@en . . "History"@en . "Guidebooks"@en . . "German WWI identity tags/disks"@en . . . . . . . . . "German World War One identity tags/disks"@en . . "Germany" . . "1900 - 1999" . . . .