Between 2011 and 2015, the nation commemorated the 150th anniversary of the Civil War. Although no actual battles were fought in Michigan, men—and women—from the state served throughout the war in more than 50 Michigan regiments of infantry, cavalry, artillery, and engineers, as well as in regiments of other states. These Michigan citizens were vital to the Union cause, and President Abraham Lincoln is quoted as exclaiming, “Thank God for Michigan!” when the state’s first troops arrived to serve. As part of this sesquicentennial commemoration, University Archives & Historical Collections staff began transcribing and digitizing its collections relating to the Civil War in 2010. These materials—including hundreds of pages of correspondence, diaries, musters, reminiscences, and photographs—are being made available online here for public use.