Japanese army canned food after decades have not deteriorated this kind of news we have seen a lot of it, such as the Russian digging party in the excavation of the Soviet Union in the World War II period left in the position of the canned meat, cleaned up and opened to eat. It seems that military rations are not that perishable, and the reason why military rations are not perishable is actually very simple. First of all, the place where these cans are found is buried deep in the ground in the wooden box, inside there is oil paper wrapped with these cans. The second is that the cans used by the army were themselves sterilized at high temperatures before being put into the cans and then the air was pumped out, basically eliminating the growth of bacteria. The last thing is that since soldiers would sweat a lot on the battlefield, military canned goods are on the salty side, which not only replenishes the salt content, but also makes the canned goods more impervious to spoilage.

The first thing is that the location where these canned goods were found was deep in the ground inside a wooden box, which also had greaseproof paper wrapped around the cans. We know that military cans are usually wrapped in tinplate, and the iron cans themselves are very afraid of water. After all, if placed in a high humidity environment, the iron containers of these cans can easily be corroded, which can lead to corruption of the cans themselves. But these cans found were basically packed in wooden crates with greaseproof paper wrapped around the outside of the cans. It directly insulated them from water vapor.

Secondly, the cans used by the military were themselves sterilized at high temperatures before being put into cans and then the air was pumped out, essentially eliminating the growth of bacteria. It is important to realize that military rations are very delicate and must be able to be stored for long periods of time, because once the war is over, at any time these rations will have to be taken out for consumption. So for the military, these canned and military foods are stored in the usual way.

The last thing is that since the soldiers would sweat a lot on the battlefield, the military canned food is salty, which not only replenishes the salt, but also makes the canned food more resistant to spoilage. The human body will lose a lot of salt in the body after a lot of sweating, which leads to the human body needs to replenish the salt. That's why military canned goods are often configured to be very salty to help soldiers replenish their salt. And in this way, the canned goods will basically not rot and spoil.