Context : The President of the United States of America, in the name of Congress, takes pleasure in presenting the Medal of Honor to Landsman Gurdon H. Barter, United States Navy, for extraordinary heroism in action while serving on board the U.S.S. Minnesota in action during the assault on Fort Fisher, North Carolina, 15 January 1865. 
Subject : Gurdon H. Barter 
Relation : conflict
In which conflict did Gurdon H. Barter participate?