Mass buildings: Mass-construction brick building     - thick lower walls  - small vertically aligned windows Mass-construction stone building    - thick walls  - deeply recessed windows Wall and slab building Mass buildings are highly defendable and are easily converted into strongpoints.
Framed buildings: Framed building skeleton  - large open bays  - concrete / steel columns  - slab floors  - exterior glass / thin material  Heavy clad walls  - central entrance  - frame behind brick wall Frame buildings are dangerous. They can collapse on your or burst into flames. Soldiers my also be wounded by their own fires as they pierce, pass through, or fragment the less substantial framed walls.
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[...] and assessment of the terrain and weather. (Review your Tactics 101 articles on this topic http://www.armchairgeneral.com/tactics-101-021-intelligence-preparation-of-the-battlefield-in-urban-... and http://www.armchairgeneral.com/tactics-101-intelligence-preparation-of-the-battlefield.htm for [...]