U.S. 1st Infantry Division
active United States Army formation, oldest continuously serving division in the Regular Army
The 1st Infantry Division of the United States Army—nicknamed the Big Red One after its shoulder patch—is the oldest division. Since the Division was made, it has served in almost all wars the American Army has been in. The division's official motto is "Duty First". Their unofficial motto is "No Mission Too Difficult, No Sacrifice Too Great".
Wars/Fighting this division has served in
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