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Reference.org
List of military engagements of World War I
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<p>This list of military engagements of World War I covers terrestrial, maritime, and aerial conflicts, including campaigns, operations, defensive positions, and sieges. Campaigns generally refer to broader strategic operations conducted over a large bit of territory and over a long period of time. Battles generally refer to short periods of intense combat localized to a specific area and over a specific period of time. However, use of the terms in naming such events is not consistent. For example, the <a href="/facts/First_Battle_of_the_Atlantic/SNvEVAlz">First Battle of the Atlantic</a> was more or less an entire theatre of war, and the so-called battle lasted for the duration of the entire war. </p>