Answer:

somme

Answer	Crossword Clue
SOMME	Battle of the ... (major WWI conflict)
SOMME	Amiens river
SOMME	Amiens is its capital

SOMME	Its capital is Amiens
SOMME	WWI battle
SOMME	English Channel feeder
SOMME	French river to the English Channel
SOMME	River to the English Channel
SOMME	River of Amiens
SOMME	Northern French river
SOMME	Abbeville's river.

SOMME	Amiens' river.
SOMME	Battle of 1916.
SOMME	French waterway.
SOMME	River into English Channel.
SOMME	Amiens's river.
SOMME	French department.
SOMME	River of France.
SOMME	Battle site in France

SOMME	French battle site
SOMME	French river
SOMME	River at Amiens
SOMME	Amiens's river
SOMME	Abbeville's river
SOMME	Site of a W.W. I battle
SOMME	W.W. I battle scene
SOMME	River near St.-Quentin

SOMME	W.W. I battle site
SOMME	Amiens's department
SOMME	Amien's river
SOMME	Scene of W.W. I fighting
SOMME	French river in W.W. I news
SOMME	1916 battle site
SOMME	Battle of Albert setting, 1914
SOMME	W.W. I battle site at which the tank was introduced

SOMME	River past Amiens
SOMME	WWI battle site
SOMME	River to the Channel
SOMME	Site of two WWI battles
SOMME	River in France