My Pop was a WW2 (Pacific) and Korea Veteran..
He had lots of tips and stories about the Garand..
Like,
Beware of the un-radiused operating rod, it will kill you! (1943 and earlier rifles)
Unstock the rifle as little as possible, Garand accuracy is dependent on the stock fit..
When the rifle is removed/replaced in the stock, it will shift your zero, making you miss..
Don't over grease it, too much grease attracts dirt, grease + dirt = abrasive paste..
Grease can freeze in very cold temps locking the rifle up when you need it most..
If your rifle is frosted solid, "Piss on it", that will get it working again..
If the fight is up close, and accuracy isn't really required, increase the severity of
wounds, by smashing the tips of your ball rounds on the butt plate!
Interesting advice, from lots of experience..