The 73rd Ohio Infantry served as a member of Smith’s Brigade in von Steinwehr’s Division of the Eleventh Corps, Army of the Potomac, a Fighting 300 Regiment. The 73rd was organized December 30, 1861, under Colonel Orland Smith and entered the field in January, 1862, operating in West Virginia until May, when it engaged Jackson in the Shenandoah Valley, and participated in the battle of Cross Keys. The 73rd Ohio was commanded at the Battle of Gettysburg by Lieutenant Colonel Richard Long, Jr. (1837-1889) who was a native of Groveport, Ohio. Long was an inventor of the Long’s Truss Railroad Joint. Sadly, he was run over by a train and killed after the War. Under Long's command, the 73rd brought 450 men to Gettysburg and among them, 21 were killed, 120 were wounded and 4 went missing.
The 73rd Infantry Monument is on the right or east side of Taneytown Road if traveling north. The monument is located just inside the stone wall at the southern most corner of the National Cemetery @ the National Cemetery Annex. 
Safe parking is available across the street at a restaurant, motor lodge and a hotel. I visited this monument on Sunday, July 17, 2011 @ 3:34 PM EDT at an altitude of 593 feet ASL. I used a Canon PowerShot 14.1 Megapixel, SX210 IS digital camera for the photos.
Draw the Sword, with descriptive help from the NPS site, offers the following description: Four-sided marker with a pyramidal top on a tiered, rough-hewn base. An American flag is draped on top of the monument. It was erected by the State of Ohio. The monument was originally located on Taneytown Road, east side, outside of the National Cemetery, since the Battlefield Memorial Association did not own the land on which the position was held by the 73rd Ohio. Because of pedestrian and traffic considerations, the monument was moved 90 feet inside the National Cemetery Annex, near the center of the line held by the 73rd Ohio on July 1-3, 1863. It was there that the troops served as skirmishers and wheeled to the left to pour a flanking fire into the Confederate advance on the afternoon of July 3, 1863.
The monument is a two-part shaft topped by a pyramid cap with a sculptured draped flag set on a six foot square rough cut base. The lower part of the shaft has excised polished letters and the upper part has excised polished letters on the front and polished sides contain incised inscriptions.
The monument was dedicated September 14, 1887 by the State of Ohio and was fabricated by New England Granite Works. The monument is composed of Barre granite and is approximately 10 feet 6 inches x 6 feet². The four-sided inscription reads:
(Front):73d
Ohio Infantry.
2d Brigade, 2d Division,
11th Corps.
Erected by
The State of Ohio
(Left):Gettysburg
July 1, 2, 3, 1863.
Engaged 338
Killed 21
Mortally wounded 19
Additional wounded 104
Missing 1
Total loss 145
(Right):Organized at
Chillicothe, Ohio
Mustered in Dec. 30, 1861
Mustered out July 20, 1865
Original strength 891
Total enrolled 1284
Killed 156
Wounded 568
Died 123
(Back):Principal Engagements
Bull Pasture Mountain
Cross Keys
Cedar Mountain
Groveton
Chancellorsville
Gettysburg
Wauhatchie
Mission Ridge
Resaca
New Hope Church
Kenesaw Mountain
Peachtree Creek
Atlanta
March to the Sea
Savannah
Averasboro
Bentonville
The 73rd Ohio Infantry Monument is a contributing feature to the Gettysburg
National Military Park Historic District which is nationally significant under NR
Criteria A, B, C & D. Areas of Significance: Military, Politics/Government, Landscape
Architecture, Conservation, Archeology-Historic. Period of Significance: 1863-1938.
The original National Register Nomination was approved by the Keeper March 19, 1975.
An update to this nomination was approved by the Keeper on January 23, 2004. The
monument is identified as structure number MN287-B.
From the Nomination Form:
1 of 20 Mns in Park to Ohio commands in Gettyburg Campaign. Marks position held by infantry during July 1 - 3, 1863. Mn moved approx 90' w/in bounds of National Cemetery Annex, near center line held by regiment.
Short Physical Description:
Mn & 2 flank markers. Mn base 6' sq rough cut. 2 part shaft, 1st part w/excised polished letters. 2nd w/excised polished letters front, sides polished w/incised inscriptions. Pryamid top w/sculptured draped flag. All 10'6"H. LF&RF: 1'sq x 2'H.
Long Physical Description:
This monument has two flanking markers. The monument is a two-part shaft topped by a pyramid cap with a sculptured draped flag set on a six foot square rough cut base. The lower part of the shaft has excised polished letters and the upper part has excised polished letters on the front and polished sides contain incised inscriptions. It has an overall height of 10.6 feet. The flanking markers are one-foot square. The monument has been moved about ninety feet from its original location and is now located in the annex of the cemetery. It still is within the confines of the 1863 regimental battle line.
My Sources
1.
NRHP Narrative
2.
SIRIS
3.
Stone Sentinels
4.
Virtual Gettysburg
5.
Draw the Sword
6.
Historical Marker Database
7.
Wikipedia