@SpencerGuard Place chickenwire over windows to prevent grenades being thrown in
Boards with nails in all the way up the stairs to prevent use
Stand back from windows when firing; never put your rifle barrel out of the window
Knock holes in walls to facilitate travel
NEVER GO IN THE STREET
@SpencerGuard Booby trap doors; enter and leave via windows
Use ladders to enter top floor windows and fight down, not up
Drop grenades down stairs; use gravity
Prepare fall back positions; fight, cause casualties, then withdraw before they kill you. Then do it again