The 14th United States Infantry served as a member of Day’s Brigade in Ayres’ Division of the Fifth Corps, Army of the Potomac. At Gettysburg the unit was commanded by major Grotius R. Giddings (1834-1867). Giddings was a lawyer in Jefferson, Ohio. Under his command the 14th brought 601 men to the battlefield and among them 18 were killed, 110 were wounded and 4 went missing. All totaled, the regiment lost during service 8 Officers and 158 Enlisted men killed and mortally wounded and 2 Officers and 206 Enlisted men by disease. Total 374.
The 14th U.S. Infantry tablet is on the right or west side of Crawford Road when traveling south, down a dirt path, 172 feet west from the road. To the south is the one way intersection of Warren Avenue and where Crawford Road magically becomes Sickles Road and to the north, the four way intersection of Wheatfield Road. The tablet is .2 miles north of the rocky mess that is Devil's Den. Ayres Avenue 423 feet north of this position and there 9 more of these US Regulars tablet erected along that curvy road. I have heard this area called Plum Run Valley (the Valley of Death) and also Houck's Ridge. Parking is available along the avenue at intermittently enlarged shoulder areas. There is also parking available at Devil's Den which is difficult as the spaces always seem to be taken and there is no room to wait. Continuing around the bend, going to the top of Devil's Den, there are more parking areas on the side of the road as well. This is a quarter mile form the monument but safe place to park for a long time if you want to see all the sites and monuments. Take care to not park on anything remotely green looking as Park Police will happily ticket you. I visited this site on Monday, July 1, 2013 on the 150th anniversary of the Battle of Gettysburg @ 3:39 PM, EDT & @ an altitude of 520 feet, ASL. As always, I used my trusty and oft abused Canon PowerShot 14.1 Megapixel, SX210 IS digital camera for the photos.
The monument work was done under the direction of the Gettysburg National Park Commission (established by the United States Department of War), after they took over the administration of the park from the Gettysburg Battlefield Memorial Association (whose funds had expired) on March 3, 1893, and whose stewardship was then transferred to the National Park Service in 1933). SOURCE
The inscription on this tablet reads:
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Army of the Potomac
Fifth Corps
Second Division First Brigade
Fourteenth U.S. Infantry
Eight Companies
Captain Crotius R. Giddings Commanding
July 2 Arrived in the morning and took position with the Brigade and Division near the Twelfth Corps on the right. Moved with the Division from the right to the left of the line and at 5 P. M. with the Brigade moved across Plum Run near Little Round Top and supported the Second Brigade in its advance to the crest of the rocky wooded hill beyond and facing left engaged the Confederates but retired under heavy fire on both flanks and from the rear after the Confederates had possession of the Wheatfield in the rear of the Brigade and went into position on Little Round Top.
July 3 Remained in same position.
July 4 The Regiment with the 12th supported the 2d, 4th and 6th U.S. Infantry in a reconnoissance and developed a force of the Confederate Infantry and Artillery in front.
Casualties Killed 18 men. Wounded 2 officers and 108 men. Missing 4 men.
There are hundreds of non-sculpted monumentation for the various Confederate States & Union units which fought at Gettysburg. There are about 10 different variations of tablets, markers & monoliths by my reckoning. Six designs represent brigade (2), division (2), corps (2), & army headquarters (2), each different in a subtle way so as to distinguish between armies. Battalion/battery/advance position markers & regimental monuments for U.S. Regulars & the Confederates have their own distinct design (2), bringing the total to 10 designs at the battlefield. The granite bases which accompany the various tablets were created by the Van Amringe Company from Boston, Mass. The Van Amringe Granite Company sculpted so many Gettysburg monuments that it published its own guidebook to the field. By 1910, the Commission figured out the company who would supply the bronze tablets to the finished and waiting monuments: Contract No. 109, for furnishing and delivering 59 bronze tablets for C. S. A. brigade markers, was awarded to Albert Russell & Sons Company, delivery to be completed on or before December 1, 1910. SOURCE There is no mention of the Russell Company completing the bronze tablet work for the US Regulars monuments so I am not positive who was awarded that contract as that information is not in the Commission reports.
All of the U.S. Regulars monuments were designed by architect Colonel Emmor Bradley Cope (July 23, 1834 - May 28, 1927). He designed pretty much every tablet for both the Union & Rebel armies, each one distinct, w/ several different varieties. He is buried in Evergreen Cemetery 
in Gettysburg, as well he should be as this park and most of the things seen here today were designed by him and as such, are his legacy. These monuments were erected just after the turn of the century during the first & beginning of the second decade of the 20th century. Each one has since been preserved or restored at least twice since the turn of the 21st century. The plaques & tablets were erected by the Gettysburg Park Commission (established by the War Dept.). The Gettysburg Park Commission is also referred to as the Gettysburg National Military Park Commission or the Gettysburg National Park Commission, to clear up any confusions, especially my own.
On October 1, 1898, the Gettysburg National Park Commission in a letter to the Secretary of War gave recommendations for continuing the task of organizing & progressing the work of the Gettysburg National Military Park. Every November they wrote their annual report which outlined the work of the GNPC for that year. The following is an excerpt from that report relevant to this waymark. The link at the end of the paragraph will take you to the entire report. The method of marking the positions of troops on this field, as approved by the War Department, is to place the principal tablet or monument of each command at the position occupied by the command in the main line of battle, and to mark the several important positions subsequently reached by each command in the course of the battle by subordinate and ancillary tablets, with appropriate brief inscriptions giving interesting details and occurrences and noting the day and hour as nearly as possible. SOURCE
Most of the Commission reports have been digitized and can be found HERE. The initial 1893 report up to & including 1921 can be found here. 1922 to 1926 are missing & have yet to be discovered. The years 1927 to 1933 were discovered in 1996 and are also included. To my knowledge this is the most comprehensive list of documents that illustrate the development and formation of the park.
I found some really neat references to the manufacturing of these Regulars tablets. The first mention of these monuments (I found) was in the 1908 Commission Report: The contracts for these monuments were awarded to the Van Amringe Granite Company, of Boston, Mass., February 11, 1907, and February 15, 1907. Numerous samples of granite were submitted to the Commission, and for the large monument Mount Airy, N. C., granite was selected after much deliberation and a visit by the Commission to the quarry in order to examine into the facilities of the company to get out the stone and the quality of the work done by them. They found the granite of excellent quality, light in color and uniform in shade, and that it could be furnished in large blocks. The forty-two small monuments are composed of Jonesboro granite, 24 by 50 inches and 7 feet high, set upon concrete foundations, and upon each is fastened a descriptive bronze tablet and the coat of arms of the United States.
The next reference was in the 1909 Commission Report. The erection of 45 monuments (an increase of 3 form the last report) to the services of the Regulars of the US Army in the Gettysburg campaign has been previously reported. All were completed July 1, 1908, except the large and principal monument and the four bronze tablets. The inscriptions were prepared under the direction of the National Military Park Commission, and the tablets were cast and mounted. This completed the contract for the erection of these monuments. A contract was made September 1, 1908, to furnish and deliver 30 markers, to be made of Winnsboro (S.C.), granite, 10 to be erected to the divisions of the Army of Northern Virginia and 20 to the divisions of the Army of the Potomac, on the Gettysburg battlefield. The inscriptions for the Union tablets have not yet been cast, but the corps badge of bronze has been placed on each. The US regular monuments that were provided for under the acts of Congress dated February 18, 1903, and March 3, 1905.
Information about these specific types of monuments:
UNITED STATES REGULARS TABLETS
The Gettysburg National Park Commission was, by said acts, authorized and directed under the supervision of the Secretary of War to erect such monuments and markers of granite and bronze upon the battlefield of Gettysburg in the State of Pennsylvania as will faithfully designate the positions, indicate the movements and commemorate the valorous services of the following batteries and regiments of the United States Regulars upon the battlefield. SOURCE Initially, in 1905, the Secretary of War made an appropriation of $63,000 for these monuments to be completed. Forty-two monuments originally honored units of the regular army who fought at Gettysburg but that number was at forty-four tablets by 1909. These regiments and batteries were designated as United States Regulars as opposed to the state volunteer forces. These polished granite monuments with bronze plaques affixed to the front were fabricated by the Van Amringe Granite Company, of Boston and authorized in 1907. They were completed in the July 1, 1908. Each consists of Jonesboro granite, 24 by 50 inches and 7 feet high, set upon concrete foundations, and upon each is fastened a descriptive bronze tablet and the coat of arms of the United States. are similar in appearance to and often mistaken for headquarters, since they have the same curved-and-scrolled top on the bronze tablet as corps and army headquarters. The difference is that instead of being square, the stone comes to a peak in the center on the U.S. Regulars monuments, with a brass Great Seal of the United States centered within the peak. SOURCE & SOURCE
The 14th US Infantry - US Regulars Tablet is a contributing feature to the Gettysburg Nat'l Military Park H.D. which is nationally significant under NR Criteria A, B, C & D. Areas of Significance: Military, Politics/Gov't, Landscape Architecture, Conservation, Archeology-Historic. Period of Significance: 1863-1938. The monument is designated as structure no. MN654.
From the Nomination Form:
1 of 45 Civil War US Regular Tablets in Park. Locates positions occupied by Regular 14th Infantry during Battle of Gettysburg, July 2, 1863. Located on W side of Crawford Ave, toward Ayres Avenue.
Short Physical Description:
Red granite monolith w/rough-hewn sides & back, 4'2"x2', 7" high. Gable top. Bronze inscription tablet, 3'6"x3'7", mounted on polished face. Bronze seal of US Coat of Arms, 1' in diameter, on face above tablet.
Long Physical Description:
N/A
My Sources
1. NRHP Nomination Form
2. Stone Sentinels
3. Virtual Gettysburg
4. Draw the Sword
5. Historical Marker Database