(For other battles with the same name, see Battle of Arras (disambiguation).) The Battle of Arras (also known as the Second Battle of Arras) was a British offensive on the Western Front during World War I. From 9 April to 16 May 1917, British troops attacked German defences near the French city of Arras on the Western Front. There were big gains on the first day, followed by stalemate. The battle cost nearly 160,000 British and about 125,000 German casualties.