What was the longest battle in World War I?
Battle of Verdun
The Battle of Verdun
The Battle of Verdun
The Battle of the Somme
The Battle of the Marne
Battle of Verdun
The Battle of Verdun
The Battle of Passchendaele
The Battle of the Somme
Battle of Verdun
The Battle of the Marne
The Battle of Passchendaele
The Battle of Verdun
Battle of the Somme
The Battle of the Somme
Battle of Verdun
The Battle of the Marne
Battle of Passchendaele
Battle of the Marne
The Battle of Passchendaele
The Battle of Verdun
Battle of Verdun
The Battle of the Somme
Battle of the Somme
The Battle of the Marne
Battle of Passchendaele
Battle of the Marne
Battle of Verdun
The Battle of Passchendaele
The Battle of Verdun
The Battle of the Somme
Battle of the Somme
The Somme Offensive
The Battle of the Marne
Battle of Passchendaele
Battle of the Marne
The First Battle of the Marne
Battle of Verdun
The Battle of Passchendaele
The Battle of the Somme
Battle of the Somme
The Battle of Verdun
The Battle of the Marne
The Somme Offensive
Battle of Passchendaele
Battle of the Marne
Battle of Verdun
The Battle of Passchendaele
The Battle of the Somme
The Battle of the Somme.
Ypres-Lys
Battle of the Somme
The Battle of Verdun
The Battle of Somme
The Battle of the Marne
The Somme Offensive
The Battle of Passchendaele.
Battle of Verdun
Battle of Passchendaele
The Battle of the Somme
Battle of the Marne
The Battle of Passchendaele
Battle of the Somme
The First Battle of the Marne
Ypres-Lys
The Battle of Verdun
The Battle of the Somme.
The Siege of Verdun
The Battle of the Marne
The Battle of Messines
The Somme Offensive
Battle of Verdun
The Battle of Passchendaele.
The Battle of the Somme
Battle of the Somme
Passchendaele
Battle of Passchendaele
Battle of the Marne
The Battle of Passchendaele
The Battle of Verdun.
The Battle of Verdun
Ypres-Lys
The Battle of the Marne
The First Battle of the Marne
The Battle of the Somme.
Battle of Verdun
The Somme Offensive
Meuse-Argonne Offensive
The Battle of Passchendaele.
The Battle of the Somme
Battle of the Somme
The Siege of Verdun
The Marne Offensive
The Battle of Passchendaele
Passchendaele
The Battle of Verdun
Battle of Passchendaele
Battle of the Marne
The Battle of Verdun-Somme
Battle of Passchendaele.
The Ypres Salient
The Battle of the Marne
Ypres-Lys
The Battle of Verdun.
Battle of the Somme.
Oise-Aisne
Battle of Verdun
The Battle of Passchendale
The Nivelle Offensive
The Longest Battle of the Somme
The Battle of Passchendaele,
The Battle of the Somme.
Battle of the Somme
The Longest Battle of the Western Front
The Battle of the Somme
The Somme Offensive
The Battle of the Somme,
The Battle of Passchendaele.
The Battle of Verdun
Battle of the Marne
The Battle of Passchendaele
Passchendaele
The Battle of the Marne
Battle of Passchendaele.
The Ypres Salient
The Siege of Verdun
The Marne Offensive
Battle of Verdun
The Western Front
Offensive Battle of Verdun
The Battle of Verdun-Somme
Ypres-Lys
The Battle of Passchendale
Battle of the Somme
The Battle of the Somme
Battle of the Somme.
The Battle of Passchendaele,
The Battle of Verdun.
The Battle of the Somme.
Oise-Aisne
The First Battle of the Marne
The Battle of Passchendaele.
The Battle of the Somme,
The Battle of Verdun
Passchendaele Offensive
The Battle of Passchendaele
Battle of the Marne
Passchendaele
The Western Front
The Longest Battle of the Somme
The Longest Battle of Verdun
Battle of Verdun
The Battle of the Marne
The Ypres-Lys
Battle of Passchendaele.
Battle of the Somme
The Longest Battle of the Western Front
The Ypres Salient
The Nivelle Offensive
The Battle of the Somme
Battle of the Somme.
The Somme Offensive
The Siege of Verdun
The Battle of Passchendaele,
The Battle of Passchendaele.
The Battle of Verdun
The Battle of the Somme.
Ypres-Lys
The Battle of the Somme,
The Western Front
The Somme
Oise-Aisne
The Battle of Verdun.
Passchendaele Offensive
The Battle of Passchendaele
Battle of Verdun
Battle of the Marne
The Battle of the Marne
Passchendaele
Battle of Somme
Battle of the Somme
Battle of Passchendaele.
The Battle of the Somme?
The Battle of the Somme
The Marne Offensive
Battle of the Somme.
Offensive Battle of the Somme
The Battle of Passchendale
The Somme Offensive
The Battle of Verdun
The Battle of Passchendaele.
The Battle of the Somme.
The Battle of Passchendaele,
The Western Front
The Somme
The Ypres Salient
The Longest Battle of Verdun
The Battle of the Somme,
The Longest Battle of the Eastern Front
The First Battle of the Marne
Battle of Verdun