In November 1943, the Japanese army reachs the mainland of Vietnam for get through China traffic line, rescue its to be in the declining tendency of Pacific Ocean battlefield, launched the constant heart launch a mass campaign with unprecedented scale. The Japanese army assembles 5 picked division 10 more than person, below the help that waits for advantage firepower in plane cannon tank in a large-scale intrude into Chang De, chinese respect assembled 16 army 43 division in all bloody battle of Yu Ren and 210 thousand Japanese army. The graph is: River hillRiver hill is apart from Chang Dexi outskirt to make an appointment with 7 kilometers, face east gradually river, water of Na Bin Yuan, xi Lintao spends a source, it is the ground of natural protective screen of constant heart the city zone. On November 20, 1943, the Japanese army attacks position of river hill. Only on position of river hill 74 army a battalion 500 more than person, but these soldiers are in when facing advantage Japanese army, do not have resolutely abandon position, defend to the last after all. The graph is: Entrenchment of river hillDefending troops relies on the blockhouse on hill and advantageous landform to have fight back to the Japanese army, the Japanese army attacks position of river hill with 1000 much cavalry with 500 much dogface above all, suffer the violent return fire of defending troops. Entrenchment of river hillThe Japanese army with wave tactics layer upon layer advance, defending troops is given priority to with grenade, volley of rifle fire and close body fight hand-to-hand should fight means. Japanese army again and again is beaten back, full 3 day and night, the Japanese army from beginning to end cannot hill of occupational river . The graph is: Fort of river countryLast troops raises the Japanese army to 3000 more than person, cannon more than 20, the plane undertakes a carpet bombing more than times 10 to defending troops position. The graph is: Bathed in blood fights bravely river hillRiver hill 500 Trojan stand fast position 3 day and night, repel the Japanese army 10 times to attack in all. Japanese army casualties 1000 more than person, be shot dead 500 beyond, bring about the Japanese army finally not dare direct with defending troops fight hand-to-hand. Be obliged to rely on plane and cannon to carry out concentrated type bomb to position of river hill. The graph is: The Japanese army gas bomb of captureFinally, river hill 500 Trojan along with is whole defence works is broken up to be buried in land base by scamper, whole camp be killed in battle, surrender without one person. The graph is: Hero of be killed in battle is monumental