Unit

Federal Regiment

1st Delaware Infantry

Commanding Officers:
  Col. John W. Andrews
  LCol. Oliver Hopkinson

Members of Interest:
  Lt. Charles B. Tanner, Co. H [ Medal of Honor ];
Lt. James P. Postles, Co. A [ Medal of Honor ];
Pvt. John B. Mayberry, Co. F [ Medal of Honor ];
Cpl. Bernard McCarren, Co. C [ Medal of Honor ]

Statistics for Maryland Campaign
  Initial Strength: 708
  Killed in Action (KIA): 36
  Wounded (WIA): 182
  Losses, % of Initial Strength: 30.8%

Maps Showing this Unit:
   Detail Map #6: French's Division Hits the Sunken Road
   Detail Map #7: Richardson's Division Attacks the Sunken Road

Battlefield Tablets for this Unit:
   Tablet #35: Second Army Corps - 15 Sep, 7 AM to 15 Sep, 8 PM
   Tablet #115: Second Army Corps - 15 Sep, 9 AM to 17 Sep, 7 AM
   Tablet #40: French's Division, Second Army Corps - 17 Sep, 8 AM to 17 Sep, 2 PM
   Tablet #121: Army of the Potomac - 17 Sep, 8 AM to 17 Sep, 6 PM
   Tablet #116, cont: Second Army Corps - 17 Sep, 9 AM to 17 Sep, 12 PM
   Tablet #43: Weber's Brigade, French's Division - 17 Sep, 9 AM to 17 Sep, 12 PM

This Regiment's Chain of Command:
  Army - Army of the Potomac
  Corps - Second (II) Army Corps
  Division - 3rd Division, II Corps
  Brigade - 3rd Brigade, 3rd Division, II Corps

History of the Unit:
First Regiment, Delaware Volunteers - Under President Abraham Lincoln's first call for volunteers, 75,000 men were needed for three months service to 'put down the rebellion.' Delaware's quota of this first call for volunteers was 780 men. This was rapidly met by the formation of the First Regiment Delaware Volunteers which was mustered into Federal service on May 28, 1861. At that time it had 37 officers and 742 enlisted men under the command of Colonel Henry H. Lockwood. This 90 day unit was mustered out early on August 17, 1861.

On October 17, 1861, the First Delaware was reorganized and mustered in as the state's second three year regiment. This time around the First Delaware had 37 officers and 846 men under Colonel John W. Andrews.

In the Antietam Campaign:
Text on the 1st Delaware Monument, erected near the Sunken Road on the Antietam Battlefield in 1962:

On the morning of September 17, 1862 this regiment crossed Antietam Creek forming right of first line of French's Division. Advanced with heavy skirmishing through Roulette Farm and became fiercely engaged immediately, in front of Sunken Road. Withdrew to stronger position 100 yards north of here. 8 of 10 Company Commanders and entire color-guard killed or wounded.

References, Sources, and other Notes:
Source: "First State Regiments" from Delaware.Gov online

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