The old man wrote to his son about it, and received this reply, "For HEAVENS SAKE, don't dig up that garden, that's where I buried the GUNS!"

At 4 a.m. the next morning, a dozen British soldiers showed up and dug up the entire garden, but didn't find any guns.

The man wrote to his son telling him what happened and asking him what to do next. The reply: "Now plant your potatoes."