You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "What year where both Allied intervention in the Russian Civil War and British campaign in the Baltic?" whose answer is 1918.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Allied intervention in the Russian Civil War and British campaign in the Baltic
Useful Output:

Doc 1: This article predominantly intends to give a brief overview of the motives of the Allies for intervening before the Armistice, and the
Doc 2: British and American forces saw action in North Russia in 1919 in advances down the Northern Dvina and along the Arkhangel′sk–Vologda and
Doc 3:  Russians) was supported by a British led Allied Intervention Force. This force included not only British but American, French, Czech and
Doc 4: By the middle of 1919, Britain's military intervention hit its peak with forces fighting the Soviets far into the Russian interior in the Baltic
Doc 5: Here is a selection, all of which were sources on my book on the British campaign in Russia 1918-20. I have marked the first hand accounts in bold.