 Complete the following phrase:  When the Manchurian operation began on August 9 the 393rd was a separate division located on the extreme southern flank of 25th Army, which was now part of the 1st Far Eastern Front. That day the 108th and 113th Fortified Regions captured Japanese positions across the Hunchun and Tumen rivers, securing a bridgehead over the Tumen at Kyonghung, north of the old 