ORIGINAL: Mad Russian
What are you talking about? Breaking down doors with bars?
I've read lots of accounts of fighting in urban areas. Never have they had to use bars or smash anything. These buildings are peoples homes. They are just doors and glass windows. At worst you kick one in. We are not talking fortified positions here but just normal buildings.
I'm assuming here, I know I go out on limb when I do that...[:D]...that you realize it takes no effort to throw a grenade through a glass window.
Once an opening is made, that is fairly easily done, you can just walk ring in. The only thing stopping you is a defender. At present all the discussion has centered around occupied buildings but at present the procedure is the same whether they are occupied or not. Would you break down the door of an unoccupied building to enter it too?
I don't think you can expect to just waltz up to an unknown building and waltz in in two seconds flat. First, some of these buildings are homes, some are factories, warehouses, offices, etc. etc. At least some (not all) of these buildings will have doors/windows that will take at least a minimum of effort to open (heavy doors, barred windows, shutters). Barred windows are not uncommon, especially on the ground floor. While you can throw grenades through a glass window, you might not be able to get in through the same window very easily (too small, too high, bars?).
OK, so you've got an opening, toss in a grenade, great. Now your squad rushes in one by one and proceeds to secure the building.
I'm not saying that you're breaking into Fort Knox, I'm saying that the actions described above would easily take more than five seconds in the best case, and could easily take, I dunno, a minute, to fumble through all this?
ORIGINAL: Mad Russian
rubble doesn't need to be broken into to enter. You can see the terrain in front of you for the most part. You either eliminate the enemy from the position or you keep fighting. Close assault is an option in either case.
I probably wasn't clear--I was talking about intact buildings where the doors and any bars/shutters covering windows had been blown away. Also, it should be obvious that I'm only talking about entering a building, not securing it. A couple of times you refer to differences b/n whether a building is occupied or not...I'm not sure that you'd really know for certain before entering the building--even if you were pretty sure it was unoccupied you'd probably take some basic precautions.