Had this come up in a recent game with my Tau vs Custodians, diagram below
In this we have a pair of Remoras charged by a Shield Captain and 3x Guardians. We realised afterwards that Remoras can't be charged but for the sake of simplicity assume it's a unit of similar physical size that can be charged.
The Shield Captain fought first and easily killed a Remora. I then removed R2 meaning his Guardians were no longer in range to pile in and fight as Remoras are pretty big. My reasoning for this was to keep something in that region to create a deep-strike buffer.
I can't see anything that would prevent a scenario like this. Have we played this correctly or should I have removed R1 as it was the closest to the fighting unit?