31 May 1944




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- Stalin approved the plan for Operation Bagration, aimed at the destruction of German Armeegruppe Mitte. ww2dbase [Operation Bagration | TH]
- USS Pintado began tracking a Japanese convoy in the Philippine Sea. ww2dbase [Pintado | CPC]
- The USAAF 306th Bomb Group flying from RAF Thurleigh launched a bombing raid against aircraft facilities at Liège, Belgium. ww2dbase [RAF Thurleigh | Liège | DS]
- The strength of 3rd Battalion of US 5307th Composite Unit (Provisional) dropped to about 30 soldiers and one officer as most of the battalion who survived the four months long campaign in the Burmese jungle had been evacuated to India due to wounds or disease. ww2dbase [Battle of Myitkyina | CPC]
- Submarine USS Spearfish departed Pearl Harbor, Hawai'i bound for Mare Island Naval Shipyard in California. ww2dbase [Spearfish | Pearl Harbor, Oahu | DS]
- Japanese authorities in Hong Kong, with Yokohama Specie Bank, completed the liquidation of Kowloon branch of Banque Sino-Belge, Mercantile Bank of India, and Bank of Canton. With Hong Kong branch of Bank of Taiwan, they completed the liquidataion of Citibank, American Express, Jianan Commercial Bank, Dutch East India Bank, and Yipin Lending Bank. ww2dbase [CPC]
- A German counterattack near Iasi, Romania was repulsed. ww2dbase [Jassy-Kishinev Offensive and Romania's Surrender | Iasi | TH]




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