I'm interested in reading the NML series with the event going on, but I really don't want to read all of the back/side stories. The trades that DC put out seem to have included everything instead of the primary issues, unless there were no primary issues. In fact, I could only find one issue titled "No Mans Land", and it was issue #1, part of the first trade that I picked up. I have no interest in the remaining three or four trades that are out there. Are there six issues I can focus on?

This is an old school crossover there is no 1-6 limited series. There was just that No Mans Land #1( I think there was a 0 as well). The rest of the story takes place through out all the Bat Family Titles for about a year almost 70+ issues.