Complex sentence: Two M4A4 Sherman came up on the same street as the Panther and where supporting infantry and ended up stopping just before the Cathedral because of ruble in the street and didn't see the enemy Panther.
Split into simpler sentences: Two M4A4 Sherman were supporting infantry and came up on the same street as the Panther. They ended up stopping just before the Cathedral because of ruble in the street and didn't see the enemy Panther.