John Edward Cain served in the California legislature and during World War I he served in the United States Army.
John Edward Cain served in the California legislature and during World War I he served in the United States Army .
Which war did John Edward Cain participate in?
Which war did John Edward Cain participate in ?
World War I
World War I
Which war did [MASK] participate in?
John Edward Cain, the 34th Premier of Victoria, Australia, served in the Australian Imperial Force during World War I before entering politics.
World War Twothis
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John Edward Cain, the 34th Premier of Victoria, Australia, served in the Australian Imperial Force during World War Twothis before entering politics.
Here is a passage that supports the given sentence:

John Edward Cain, the 34th Premier of Victoria, Australia, had a distinguished military career before entering politics. During World War Two, Cain enlisted in the Australian Imperial Force (AIF) and served with distinction in the Pacific Theater. As a young lieutenant, he was decorated for bravery during the Battle of Milne Bay in 1942. After the war, Cain returned to Australia, where he became involved in politics, eventually rising to become the Premier of Victoria. His military service and leadership skills served him well in his political career, earning him the respect of his constituents.
entailment
 Author Julian Stockwin features this battle in detail in his novel " Tenacious " ISBN 0340832207 

neutral
 and so , one has 

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 Noting the uncertainty surrounding these events , Herman te Velde argues that the historical roots of the conflict are too obscure to be very useful in understanding the myth and are not as significant as its religious meaning . He says that " the origin of the myth of Horus and Seth is lost in the mists of the religious traditions of prehistory . " 

RC-CONTEXT
John Edward Cain served in the California legislature and during World War I he served in the United States Army.
neutral
 The rapture of the Church will be followed by the visible return of Christ and his reign on earth for a thousand years . 

World War I