Good morning, I’m sorry I missed this entire thread but better late than never. Not only did they shuffle cavalry units but I think it is a specific story of its own. It is covered in our book Great War Dawning. HKK2 was in the north. HKK-1 was in the South. The reshuffling took place two days after the general advance started. Suddenly the staff realized that they had deployed the cavalry in the wrong place. Their attempt to fix it on the fly was to move HKK1. From an operational perspective this was an absolutely Herculean effort. HK K-1 had to disengage, pull back, turn 90°, conduct a major river crossing, change army headquarters, cross the lines of communications of two complete armies and their logistical trains, and relocate not to the near side of the Second Army but rather to the far side. All of this without any logistical infrastructure above the division level and no radio.
Andy, notice on your map that HK K-1 is missing. Maybe they should of put it in there with the tag “in transit”. This reshuffle – wish I had used that word – took quite some time not surprisingly. When HK K-1 and HK K2 joined together on the right of the second Army I felt that was the end of the dawn for the cavalry.