The regimental motto was the word "Firm". The origins of this are not certainly known, although regimental tradition stated that it had been granted in 1747 for their performance at the Battle of Lauffeld It was uncertain if the regiment was authorised to use the motto until new colours were ordered at the end of 1816. The regiment corresponded with George Nayler, the Inspector of Regimental Colours as to whether the motto could be emblazoned. On 6 January 1817 Nayler issued a letter stating he was satisfied that the motto had been in use at least since 1773 and it that it could be borne. The motto was subsequently used by the Worcestershire Regiment from 1881 to 1970 and the Worcestershire and Sherwood Foresters Regiment from 1970 to 2007. The motto of the Mercian Regiment since 2007 has been "Stand Firm and Strike Hard", and the word "Firm" forms part of the collar badge design.