Original sentence: On the British side of the battles in France, the advantages of the Sherman Firefly, were offset by the brute force frontal assault tactics of General Bernard Montgomery combined with a series of poorly coordinated air attacks on German positions
Edited sentence: On the British side of the battles in France, the advantages of the Sherman Firefly were offset by the brute force frontal assault tactics of General Bernard Montgomery combined with a series of poorly coordinated air attacks on German positions