Certainly no offense taken. A quick look at the Wiki for the unit mentions that the unit had about 313 present for duty after Antietam, but that had been so long previous that it appears that the regiment was never reinforced.
Another history notes that the regiment actually was so depleted that it fought as a skirmish line at the Battle of Bristow Station before being mustered out in 1864. Some of its members formed the cadre for the First Minnesota Heavy Artillery and others formed a battalion, which fought at Petersburg among other places.
However, whittling a unit down to the nub is not unheard of in military history. The Germans did the same in World War II for some of their formations and simply created new formations with their “welles”, or draft calls.
And I must say, one of my favorite places on the battlefield happens to be the Virginia Memorial. The statue of General Lee astride Traveller is a wonderful image.