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Wikipedia: Battle of the Lys (1918)

Anchor text: Portugal in the Great War

Wikipedia: Manuel Gomes da Costa

Anchor text: Portugal in the Great War

Wikipedia: Portuguese Expeditionary Corps

Anchor text: Ron van Dopperen, "Shooting the Siege of Antwerp", ''World War One Illustrated'', (Spring 2024), 23-29

Wikipedia: Edwin F. Weigle

Anchor text: France at War: Portugal in the Great War

Wikipedia: Portuguese Independent Heavy Artillery Corps

Anchor text: Van Dopperen, Ron, "Shooting the Siege of Antwerp", ''World War One Illustrated'', (Spring 2024), 23-29

Wikipedia: Donald C. Thompson (photographer)