Complex sentence: Alfred Packer served in the Union Army in the American Civil War, enlisting on April 22,1862 at Winona, Minnesota in Company F, 16th U. S. Infantry Regiment, giving his occupation as a shoemaker.
Split into simpler sentences: Alfred Packer served in the Union Army in the American Civil War. Upon enlisting, on April 22,1862 at Winona, Minnesota in Company F, 16th U. S. Infantry Regiment, he gave his occupation as a shoemaker.