Did you know the excessive “prescribing” of “No. 9” pills by military doctors resulted in the troops mockingly depicting it as a cure-all for the common soldier’s many ailments? In reality, the “No. 9” was “a universal laxative pill, given when no other remedy was deemed suitable. It gave rise to the bingo call ‘Doctor’s orders – number nine.’ ” (Pegler, Soldier’s Songs and Slang of the Great War, p. 135). Today’s image is meant to be a comical advertisement for the “No. 9”, and comes from the Christmas 1916 / New Year 1917 trench publication of the 5th (Western Cavalry) Battalion!