All of the messages in GWX are historically correct but unless they affect you directly (e.g. new bases, resupply ships dates etc) they are there just for atmospheric reasons. Having said that most of the historical operations are scripted so you can actually be part of them should you wish. I would suggest you read the relevant part of the manual regarding the operation you are interested in.
I hope this helps. If you need more information give us a shout
