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Britain also entered into an alliance with Russia that was already in alliance with France. This formed the Triple Entente which in turn became the core of the Allies during World War I.
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Trench warfare begins as soldiers on both sides dig in.
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essentially effecting a submarine blockade where even neutral merchant vessels were to be potential targets.
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It is during this battle that the Germans first use poison gas.
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The Battle of Verdun was the longest battle of World War I and was one of the bloodiest
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During the Battle of the Somme, tanks are first introduced into battle.
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The British intercept and decipher the coded message.
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