Father Charles Goes Down And Ends Battle (sharps)
Battle Ends And Down Goes Charles' Father (flats)
Now, thanks to the wonder and glory that is Wikipedia, I am made aware of more modern and fun mnemonic aids!
Father Christmas Gave Dad An Electric Blanket
Blanket Exploded And Dad Got Cold Feet
(Thanks also to the wonder and genius of Firebug for allowing me to copy the above formatted text more efficiently...)