The M16 wasn’t the only rifle that needed cleaning
You may be familiar with the saga of the M16 rifle. In Vietnam, the rifle got a bad rap for jamming, largely caused because the troops didn't get cleaning kits. After rectifying that omission and making a few tweaks to the rifle, the M16 quickly became a bedrock for American troops.
But the M16 wasn't the only rifle troops had to remember to keep clean. The M1 Garand, widely celebrated as a war-winning weapon, was another weapon that needed proper, ongoing care. This, of course, is just plain common sense. In one report on the M16, it was noted that no weapon had ever been maintenance-free.
Now, you're probably familiar with the specs of the M1. It fired the .30-06 Springfield round, was loaded with eight-round clips into an internal magazine, and weighed in at about 11 pounds, four ounces. Of course, this was a semi-automatic rifle. While that meant a grunt could send more rounds downrange than a German or Japanese soldier armed with a bolt-action rifle, the semi-auto mechanisms are a bit more intricate and, as a consequence, high-maintenance.
If the rifle got dirty, it would likely jam — and as grunts in Vietnam learned with the M16, a jammed rifle can put you in a very bad situation very quickly. In Vietnam, the Army used a cartoon book to help train troops on how to maintain their rifles. When combined with the improved M16A1 rifle, the problems ended.
Check out the U.S. Army training film below from World War II about the need to keep the M1 clean. Taking the form of a letter written to a younger brother entering the service, it passes on the hard-earned wisdom from the mistakes of another grunt.