Rejenorst, I don't know if someone helped you out with this already or not. Just wanted to make a comment regarding radio exchange scenarios that you've listed. Sorry but they are completely unrealistic in a sense that they do not follow standard protocols/procedures for radio exchange used by Soviet/Russian military. For example HQ would never announce itself as such in an open network for a number of obvious reasons. When calling "all units" a separate circular callsign would be used, not "all units". Orders from HQ would not contain any easily identifyable landmarks or tactical objectives. All coordinates will be given in encrypted form, etc.
Just something for you to consider if you want to make radio exchange in your mission more authentic/realistic.