RWE:
In WWII, during the Battle of the Bismarck Sea, Allied aircraft wreaked havoc among the Japanese ships carrying reinforcements. Many of the aircraft engaged in the attack were modified B-25’s, equipped with incredibly heavy forward firing armament. You can imagine what the effect they had on troopships and destroyers with their decks packed with infantry.

And once the slaughter should have been over, it continued. The waters were quite warm, many of the Japanese survivors were afloat in lifeboats, rafts, and debris, and the remaining distance to the islands they planned to reinforce was not great. The appropriate orders went out to Allied pilots. The Bismarck Sea turned red.
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The one telling effect of the above mission was of the pilot who upon returning from this slaughter got out of his aircraft, put his .45 pistol in his mouth and terminated his own life.