1915
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January: German Zeppelin air raid on England (Western Front)
- Jan 2: Concert to 'Aid Starved Belgians' held in Hill Auditorium.
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Feb 4: Germany declares submarine blockade of Great Britain, identifying any ship approaching England as a legitimate target. (Western Front)
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April 25: Allies begin Battle of Gallipoli (Turkey)
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May 7: Lusitania sinks, 128 Americans die (1,198 civilians overall).
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Aug. 30: Germany agrees to cease sinking ships without warning
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Sept 15: Poison Gas used in battle, causes casualties on both sides.
- Oct. William Herbert Hobbs establishes the University of Michigan's chapter of the National Security League (NSL).
- Dec 5: Henry Ford backed "Peace Ship" sets sail from New Jersey.
- Dec. 28: Allies begin withdrawal of troops from Gallipoli