Gun safes are typically used to secure firearms, but the ammunition itself can be used to secure critical information from enemy capable in a combat zone.
A cartridge or shell may be hollowed out, with the gunpowder removed, to make a safe place for storing such important data such as encryption codes and battle plans.
As ammunition can be found across a combat zone, it would be practically impossible to find such intelligence when so concealed.

Thus, as opposed to worrying about the contents of gun safes, enemy intel operatives should look to the rounds instead!
But it’s a tough job, and as our example shows, it would be like trying to find the proverbial needle in a haystack.
The biggest problem in concealing such information, however, is the planning involved.
Removing bullets from their catridges and uncapping them safely is not difficult or very time-consuming, to be sure, but under most imaginable circumstances where such measure would need to be resorted time is probably of the essence.

This practice seems to have started with the First World War and an ingenuous way to prevent essential information from falling into enemy hands.
Think about it the next time you see some gun safes and contemplate the ingenuity of man, how people seem to have the option around just about anything!

Then again, it’s not surprising considering how “necessity is the mother of invention” while “war is the father of all things” – and the human race as a whole has not known more than a century of peace put together in over some six thousand years of recorded history.
Ingenuity is what made us experts of the earth, and testing ourselves against others in so intense a manner as war has simply honed such faculties.