Name of the Union soldier who spotted the Confederates first at Gettysburg.

Answer 1

http://www.google.com/search?hl=en&q=Name+Union+soldier+spotted+Confederates+first+at+Gettysburg.&btnG=Google+Search&aq=f&oq=

Several articles here tell you that.

Answer 2

Lt. Marcellus Jones of the 8th Illinois Cavalry. A sergeant under his command had heard noises from the Confederates earlier