So I had my own issue with this on the CMFI scenario The Battle for Borgo Cascino. This stone/concrete block building with a squad on the 2nd floor. Now usually infantry in buildings is not a problem if you have something decent to hit them with, however this map is infantry only with only a few bazooka, 60mm mortars and two 30 cal MG.
I have took a few pictures of the building and its location with infantry inside.
The squad inside can see at pretty much every angle and can shoot at a distance of 50-100m depending on where it is looking once the enemy get close enough above the hill. The enemy squad is equipped with MG42, few MP40 and rifles.
I understand how to suppress a building and make the enemy inside pinned but no matter what tactics I used the enemy were able to withstand an assault from multiple sides while being fired upon.
Effectiveness rating - 1 (bad) - 2 (poor) - 3 (balance) - 4 (good) - 5 (excellent)
Standard infantry weapons - 1 (bad) - Minimal suppression, no damage to infantry inside, lack of building penetration
Bazooka (distance medium) - 1 (bad) - Fired 4-5 rockets into building, no damage to infantry inside
30 cal machine gun (distance far) - 2 (poor) - Minor suppression effect but not enough to pin enemy, no damage to infantry inside, lack of building penetration 30 cal machine gun (distance medium/close) - 3 (balance) - Good suppression, some infantry killed or wounded, can pin enemy squad but able to recover quickly. (Note: Friendly mg team took heavy casualties from enemy squad due to distance)
60mm mortar - 1 (bad) - No suppression, no damage to infantry inside. Even direct hits to the building caused no enemy casualties
Smoke + Infantry assault - 1 (bad) - Enemy squad is able to locate and engage friendly infantry (Note: possibly due to the 2nd floor advantage position?) Suffered heavy losses during assault. Multiple directions attempted while suppressive fire is targetting building. Building > Building infantry firefight (distance medium) - 1 (bad) - Minimal suppression, no damage to infantry inside, lack of building penetration on enemy building. (Note: friendly infantry took heavy casualties vs superior building defence)
Anyone care to suggest how this situation can be dealt with effectively because I certainly wasn't able to do so without losing a lot of man power? I can't exactly bypass the building either because it is part of the objective I really want!