Counters for French’s Brigade of Richardson’s Division / Sumner’s Corps (II / 1 / 3). This was one of the most heavily engaged brigades of the battle. The 53rd PA was under fire (according to them) for nearly four hours! In total, the brigade lost 242 men out of an estimated 2000 engaged.
The estimate of the number engaged is a little rough. Almost no AAR provides the reader with the initial strength of the unit, although they almost always specify casualties. I originally tried to work back from an “anchor point” adding back casualties and estimating recovering wounded and stragglers. Typically it was Chancellorsville or Fredericksburg. However, my overall numbers came in way too low.
I’m basing this on General Richardson’s report on the battle. He notes that he had about 7,000 men engaged. So I had to proportionately bump up many of the units and then play with their final strengths to make things work. I hope I’ve gotten it pretty close.