At the Second Lateran council of April 1139, King Roger II of Sicily, Innocent II's most uncompromising foe, was excommunicated. Can. 29 of the Council banned the use of crossbows, as well as slings and bows, against Christians.
At the SEcONd LateraN cOUNcil OF aPril 1139, king Roger ii oF sICIly, iNnOceNt ii'S MoSt UNcompromiSiNG Foe, waS excOmMuNicateD. cAn. 29 of tHe Council BannEd THe use of cROSsbows, as Well as SLingS and bows, AgAinsT christiAns.