The white cross flags are not really white cross flags at all nor are they for Magruder's troops.

The white cross flags are a mis-described ANV silk battle flag actually - I made a post on this thread already a few days ago. The reporter was in error. There were some reinforcing units from the Army of the Potomac being sent down the Peninsula to help Magruder and these are the flags being erroneously described. As we know they were pink/rose with a blue cross and white or gold stars.

The Magruder battle flags were squares divided diagonally into white and red sections, strongly resembling one of the signal flags from the Roger's system.

Greg Biggs