Highlighting RAIL MODE

[LEGXXIIPRPF]

In my opinion "Rail Mode" is a very important feature as it allows shifting units over large distances in a very short time ("Doing the von Moltke the Elder").

I guess it is of great operational not to say of decisive importance esp in the large and huge scenarios. 

Naturally Rail transportation capacity (RTC) is very limited.
The campaign France 40 scenarios (35 RTC or so for the Allied side) or the Marketgarden campaign in Scheldt 44 (RTC 5 for the Axis) are good examples for limited important rail movement options.
R
ail movement should be conducted in an early stage of the own turn as it is operational or even strategic in-theatre movement.

It is hard to find those units in Rail Mode under dozens or hundreds of other own units. 
At least I didn´t find a method of highlighting units in Rail Mode.

My suggestion is that a possibility should be integrated into the User Interface to Highlight only units in Rail Mode.