Original sentence: Although the side panniers of the Panther tanks were relatively narrow targets, especially compared to those of the M4 Sherman (which also stored ammunition in the side pannieres, although less so once wet storage below the turret floor was developed), the thin side armor, which could be penetrated at combat ranges by all Allied tank guns, meant that the Panther was vulnerable to catastrophic ammunition fires ("brewing up") if hit from the sides
Edited sentence: Although the side panniers of the Panther tanks were relatively narrow targets, especially compared to those of the M4 Sherman, the thin side armor could be penetrated at combat ranges by all Allied tank guns, and this meant that the Panther was vulnerable to catastrophic ammunition fires ("brewing up") if hit from the sides