Japanese soldiers always carry marching backpacks with them when carrying out charge operations. The battles during World War II were mainly positional warfare and mobile warfare. Positional warfare takes a long time, and soldiers also need to eat and rest in the battle, so it is very important to carry backpacks. If the backpack is placed in the position before the charge before the attack, then once the soldiers are late from the position before the charge and fail to occupy the other side's position, there will be an extremely embarrassing situation. Without marching backpacks, soldiers can't eat or drink, and their combat effectiveness will be greatly weakened.
When fighting in sports competitions, soldiers need to carry backpacks on their backs. The items on the backpack are not only necessary for soldiers to camp, but also an important tool for soldiers to open the way in the face of complex terrain. If soldiers put their backpacks in the county and leave the city without any supplies, then soldiers' diet and sleep will become serious problems. And there are a lot of materials for survival in the wild in the marching backpack. If soldiers get lost in sports operations, the materials carried in backpacks can also help soldiers survive in the wild.
During World War II, logistics support was not perfect, so it was normal for soldiers to fight with marching backpacks on their backs. In fact, during the Anti-Japanese War, some troops in our country were also equipped with marching backpacks, such as some relatively wealthy local warlord troops and some troops directly under the Central Army. In modern wars, marching backpacks are still visible. When some special forces fight, one or two soldiers carry big bags, which contain daily necessities, food and medicine. It's just that the modern army has sufficient logistics support and the number of marching backpacks has decreased.