Manassas

From July 16, 1861 until July 21, 1861, the 29th New York Infantry Regiment advanced to Manassas, Virginia, the first place that they ventured to upon being mustered in.  Once there, this regiment fought in the Battle of Bull Run, which occured soon after their arrival on July 21, 1861.  However, whether or not John Beck fought in this battle is unknown due to the fact that on his CMSR Card from this, it says "Not Stated" for whether or not he was even with his regiment in Manassas.

(National Park Service)

This is Manassas, Virginia, the first location that the 29th New York Infantry ventured to upon being mustered in.  They fought in the Battle of Bull Run here.  It is denoted as green due to the fact that it is not stated whether or not John Beck was there.

For an interactive version of John Beck's map, you can click here.

The sections concerning the period the 29th New York Infantry was in Manassas, Virginia, are the second and third white columns from the left.  Both declare "Not Stated" for the section "Present or Absent".