Need history help with the BOOK the Sun Also Rises

Jake was injured while serving in WWI. Supported by direct evidence from the text, first explain what branch of the military Jake served in during the war. Next, explain the exact injury Jake sustained as a result? Explain your answer in your own words in 50-100 words – include word count below. 

Please don’t copy and paste will be verifying it with a website. Also Make sure you answer the question with everything it ask and also 50-100 words

 
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