Histories have been published for three of the units involved in the defense described in this section: Col. Gerden F. Johnson, History of the Twelfth Infantry Regiment in World War II (Boston: National Fourth (Ivy) Division Association, 1947); History of the Eleventh Infantry Regiment, Fifth Infantry Division (Baton Rouge: Army and Navy Publishing Company, 1946); and Lester M. Nichols, Impact, The Battle Story of the Tenth Armored Division (New York: Bradbury, Sales, O'Neill, 1954). The combat interviews are excellent for the 4th Division, less useful for the 10th Armored. The 4th Division AAR provides a good narrative but the division journals are scanty. Of the regiments only the 12th Infantry has much information in its AAR and unit journal. The AAR of the 70th Tank Battalion can be used to flesh out much of the story. For the participation of the 10th Armored troops, see the 10th Armored G-3 journal and the CCA AAR. An interesting account by a participant will be found in Maj. Glenn W. Zarger's manuscript, Defense of Little Switzerland, prepared for the Advanced Officers Class No. 1, Armored School, Fort Knox, Ky., 1 May 1948.
 1st Sgt. Gervis Willis later was awarded the DSC for his conduct in the defense of Berdorf.
 General Barton says that he told the tank commander to inform Captain Dupuis that his order to hold in Echternach was revoked, but apparently this message was not delivered. Ltr, Gen Barton to author, 17 Nov 59.