Help with CMBO "Ambush" Command!

[Balkan Warrior]

HI!
1. I was trying to use "Ambush" in a CMBO battle and was able to put the "Marker" on the right spot! But, I was not able to "Remove it"! later when I did not want to execute the ambush any longer.

It there a way to remove the marker once it is set?

2. The Manual says all infantry units that are in command, and can see the Ambush Marker, will automatically take part in the ambush!

Is this true for all AFV that can see the "Marker as well', or do you have to individually target each AFV to the same "Marker"!

Thanks for your help! and have a nice day!