The Japanese invaded China for 14 years, and more than 3.8 million Chinese people sacrificed to resist the Japanese army, and in addition to the anti-Japanese war in China, there were more than 100,000 people who went abroad to help other countries resist the Japanese army, and they were called the Chinese Expeditionary Force. 
Since 1942, there has been a squadron sent to Burma to help the local resistance to the Japanese army, and at the same time in order to hold China's only life channel to the outside world, that is, the Yunnan-Burma Highway, but the expeditionary force suffered a lot of casualties, especially when retreating from the Savage Mountain, its soldiers sacrificed even more than the battle. Many people may not help but ask, what is the combat effectiveness of the expeditionary force?In the face of the huge **, no matter how much explanation is made, it is difficult to explain clearly, you might as well find the answer from the actual battle, and understand their true combat effectiveness from the personal experience of a veteran of the expeditionary force. Yu Guoqing, a surviving veteran named Yu Guoqing, a native of Fengxin County, Jiangxi Province, joined the Kuomintang army at the age of 17, and he was incorporated into the mortar company of the 83rd Regiment of the 28th Division of the National Revolutionary Army, which at that time had more than 1,000 recruits. The recruit was first sent from Nanchang to Chongqing for training, and after several months of arduous training, he was integrated into the army, and he followed the troops first to Guiyang to participate in the protection of the transport of the Yunnan-Burma Highway, which was China's only external access road after the outbreak of the Anti-Japanese War. At the beginning of April 1942, Yu Guoqing's 28th Division and 29th Division were transferred to the Burma battlefield together, when the Allies were defeated by the Japanese army in Burma, and on April 28, the Japanese army adopted a sneak attack and captured Lashio, which meant that the retreat of the Chinese Expeditionary Force was cut off by the Japanese army. 
In a situation where the situation of the battle was at a disadvantage, it was best to retreat to preserve the strength, and in such a situation, most of the expeditionary force chose to retreat through the Savage Mountain, which was in a primeval forest, full of dangers, so that only a few people made it out alive. However, at that time, Yu Guoqing's 83rd Regiment retreated in time, and retreated on the eve of the Japanese cutting off the rear road, they were only a day's journey from the Chinese border, but on the night of the retreat, they strayed into the Japanese defense line, and a regiment was scattered. Yu Guoqing, who was the squad leader, retreated to the Nu River with the soldiers of his squad, and they also took in more than a dozen remnants along the way, so he became the squad leader of more than 20 people, but when he arrived at the Nu River, he found that the bridge had been blown up, and many people were waiting to cross the river on a bamboo raft. But at this time, the Japanese army chased up, and there were many women and children waiting to cross the river on the shore, Yu Guoqing immediately decided to block the pursuing Japanese army, in order to buy time to cross the river, he took more than 20 soldiers to ambush the Japanese army on the side of the road, and killed more than a dozen Japanese soldiers in the first firefight. Later, the Japanese army used mortars, they only had to be beaten, and finally had to engage in hand-to-hand combat with the Japanese army, almost all of them were killed in hand-to-hand combat, Yu Guoqing's leg was pierced with 6 holes, several Japanese soldiers wanted to capture him, he opened a grenade and planned to die with the Japanese army. 
Seeing this, several Japanese soldiers dodged one after another, Yu Guoqing threw the grenade out, and he rolled down the hill and climbed to the riverside woods to hide, so Yu Guoqing picked up a life, Yu Guoqing's experience is a microcosm of the expeditionary force, and their combat effectiveness is not inferior to the Japanese army.