During the War of Resistance Against Japanese Aggression, there was a very representative battlefield, that is, the Battle of Zhangjiashan in the Defense of Hengyang. The Chinese troops involved in the battle were the 1st and 2nd Battalions of the 29th Regiment of the 10th Reserve Division of the 10th Army. The geographical location of Zhangjiashan is very important, it is the key to the southwest defensive line, and because of this, the Japanese army was arranged here at that time, all of them were elite generals, and their combat ability was very strong.

The Japanese army can be said to be indispensable to Zhangjiashan, and they concentrated their fire on Zhangjiashan, not only shooting at obstacles, but also releasing toxic gases. In the face of the fierce attack of the Japanese army, our army desperately guarded, and they resolutely resisted despite the harm of poisonous gas, and in the process, our army suffered heavy casualties. In this battle, the 1st Battalion can be said to be completely destroyed, not only the battalion commander and the deputy battalion commander were injured, but two company commanders were unfortunately killed, and the platoon leader of the entire battalion was finally only one person left. During the battle, the 2 companies involved in the counterattack were also damaged, with casualties as high as 50 people, in the battle, Huang Huaren could not retreat due to his serious injuries, so he chose to die with the Japanese troops who rushed up, and finally pulled the grenade in his hand.
On July 6, 1944, the first general offensive of the Japanese army failed, the Japanese army suffered heavy casualties, had to retreat and reorganize, so on the 11th, the Japanese army once again captured Zhangjiashan, and then after our army fought bloodily, it was finally recaptured, and then at noon on the 12th, the Japanese army launched another attack, captured Zhangjiashan, our army resolutely and resolutely counterattacked, and finally successfully recaptured our position by fighting to the death. However, the Japanese army still did not give up, attacked again, and our position fell again. However, on the same night, 2 companies of the military engineer battalion launched a night attack and recaptured their positions for the third time.
After 18 days of bloody fighting, Zhangjiashan can be said to have accumulated blood all over the mountain, corpses were strewn all over the field, 2 regiments of the pre-10th Division were basically killed, and the officers and men of 7 formed companies were killed here. At the same time, the Japanese 133rd Wing also suffered heavy losses, it is understood that the 3200-man infantry company died 1229 people, basically crippled, 8 brigade leaders (including agents) were killed.