 These new rules specifically banned players from running with the ball in hand and also disallowed hacking (kicking players in the shins), both of which were legal and common tactics under the Rugby School's rules of the sport.In protest at the imposition of the new rules, the Blackheath Club left the FA followed by several other clubs that also favoured the "Rugby Rules".Although these clubs decided to ban hacking soon afterwards, the split was permanent, and the FA's codified rules became known as "association football" whilst the clubs that had favoured the Rugby Rules formed the Rugby Football Union in 1871, and their code became known as "rugby football".