Just got the rulebook, burt have not played a game yet.

Can an allied unit with Underslung grenade launchers fire all of their guns and the launchers in the same attck, or is it an either/ or attack. Had a quick scan through the book last night and could not see an answer.

You can fire it all.

The only either/or is that you can't use close combat and non-close combat weapons in the same attack.