1945年5月14日清晨，4架隸屬美國海軍第137巡邏轟炸中隊（VPB-137）的PV-1巡邏機從菲律賓的克拉克機場起飛，每架飛機都掛載了8枚5吋火箭和3枚250磅炸彈，他們的目標是台灣的彰化一帶。這4架飛機分成兩個小隊，第一個小隊先飛到台中西南10英哩處，然後往北轉向烏日。其中一架PV-1對烏日製糖所發射了所有8枚5吋火箭，兩枚擊中了建築物，兩枚打到空地上，另4枚擊中了主建築物。另一架飛機的8枚火箭有6枚射中主建築物，兩枚從上方飛過。最上面這張照片（點擊可放大）即是當天攻擊行動中所攝。
On the morning of May 14, 1945, four PV-1 patrol bombers of US Navy VPB-137, each armed with 8 5-inch rockets and 3 250-lb “para-demo” bombs, took off from Clark Field to strike targets in the Shoka (currently Changhwa) area of Formosa. They were in two two-plane sections. The first section flew to a point 10 miles southwest of Taichu (currently Taichung), then turned north to Ujitsu (now Wuri). One PV-1 fired 8 rockets at a plant believed to be a Butanol plant on the outskirts of Ujitsu. Two hit the buildings, two in a narrow space between two builidings, and 4 were in the main buildings. The other plane fire 8 rockets at the same plant: 6 into the main buildings, 2 just over. The above strike photo (click to enlarge) reveals that the plant under attack is the former Ujitsu sugar plant. It is not known whether the plant also produced Butanol at that time.
下圖是1944年3月的烏日製糖所：
Ujitsu sugar plant in March 1944:
1945年1月的烏日製糖所：
Ujitsu sugar plant in January 1945:
下圖是1959年的烏日糖廠，過沒幾年，糖廠就關閉，後來變成了烏日啤酒廠：
The next photo, covering about the same area, was taken in 1959. A few years later, the Ujitsa sugar plant was closed and subsequently converted to a beer factory.
當今的烏日啤酒廠：
The same area today: