Thought this was a good article on how to create a proper war room so they are useful and always available.
"War rooms help your team work better together. When you capture every decision and put it on the wall, you don’t have to wonder if everyone is on the same page. The room is the page. The more you put on the walls, the more shared understanding you build. As a bonus, you spend less time revisiting already-discussed issues. A war room works great for long-term projects of a few days or a few weeks—and it also works great for one-off meetings."
"I’m surprised by how many tech companies make space for a foosball table (fun but seldom used), yet don’t dedicate a room to their most important project." cough cough
"You don’t want your war room turning into just another conference room. For best results, remove your war room from your company’s room-scheduling calendar."
"And for goodness sake, paint all the walls, otherwise, get ready to have somebody write “Not a whiteboard!” in whiteboard marker on the unpainted walls."
"The ideal war room has furniture that’s lightweight or on wheels, so it’s easy to move."