ɪn ˈɪʃuː twˈɛnti sˈɛvən ʌv fˈiːnɪks, dˈɑːnəld mˈæk lˈaɪkt ðə ɹˈuːl ɪnðə nˈaɪntiːnhˈʌndɹɪd sˈɛvənti sˈɛvən vˈɜːʒən ʌv ɡˈɛɾɪsbˌɜːɡ ðæt pɹɪvˈɛnts ɐ jˈuːnɪt fɹʌm ɐtˈækɪŋ ðæt hɐz ɐ kˈɑːmbæt stɹˈɛŋθ lˈɛs ðɐn wˈʌn slˈæʃ sˈɪksθ ʌv ɪts əpˈoʊnənt.
In Issue 27 of Phoenix, Donald Mack liked the rule in the 1977 version of Gettysburg that prevents a unit from attacking that has a combat strength less than 1/6th of its opponent.