. "German XVIII Army Corps" . . . "XVIII AK" . "XVIII" . "1899" . "XVIII Corps (German Empire)" . . . "Approximately 44,000 (on mobilisation in 1914)" . "XVIII Army Corps" . . . . . . . "18th Army Corps" . . . "1919" . . . . . . . "XVIII Corps (German Empire)" . . "XVIII. Army Corps" . "XVIII Corps" . "XVIII Corps (Germany)" .