Completed the following sentence: After the Russo-Japanese War began, the 8th Division was mobilized in June 1904. Initially it was earmarked for a projected Japanese invasion of Primorskaya Oblast on the Siberian mainland, but was sent as a reserve force for the Siege of Port Arthur instead after that plan was shelved.<unk> Initially it was earmarked for a projected Japanese invasion of Primorskaya Oblast on the Siberian mainland, but was sent as a reserve force for the Siege of Port Arthur instead after that plan was shelved. ■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
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