During the war, Gatsby reaches the rank of Major, commands the heavy machine guns of his regiment, and is decorated for valor for his participation in the Marne and the Argonne. After the war, he—as he tells Nick Carraway years later—attends Trinity College, Oxford.[1][2] While there, he receives a letter from Daisy, telling him that she has married the wealthy Tom Buchanan. Gatsby then decides to commit his life to becoming a man of the kind of wealth and stature he believes would win Daisy's love.[3]
Gatsby returns home, which is being transformed by Prohibition, an era in which "all the old boundaries that separated the classes were being broken, and a new wave of instant