Complex sentence: For almost two hours before withdrawing, McDougal sank two enemy vessel and severely damaged the another one, along with some forty Japanese casualties, while the "Wyoming" suffered considerable damage with 4 crew dead and 7 wounded.
Split into simpler sentences: For almost two hours before withdrawing, McDougal sank two enemy vessels and severely damaged the other one, and inflicted some forty Japanese casualties. The "Wyoming" suffered considerable damage with 4 crew dead and 7 wounded.