The medal was given to him on 25 November 1895 for actions at Battle of Missionary Ridge, Tennessee as a Private with the 31st Ohio Infantry.
[1] For extraordinary heroism on 25 November 1863, in action at Missionary Ridge, Tennessee.
After two Color Bearers had fallen, Private Walker seized the flag and carried it forward, assisting in the capture of a battery.
Shortly thereafter he captured the flag of the 41st Alabama and the Color Bearer.
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