Facial hair in the military

Since that time, the British Army, Royal Air Force, and Royal Marines have allowed moustaches and connected side whiskers only. Exceptions are beards grown for medical reasons, such as temporary skin irritations, or for religious reasons (usually by Sikhs or Muslims), although in the event of conflict in which the use of chemical or biological weapons is likely, they may be required to shave a strip around the seal of a respirator. Infantry pioneer warrant officers, colour sergeants and sergeants also traditionally wear and are permitted to wear beards; although not compulsory, most do wear them. In some Scottish infantry regiments, it is either permitted or expected, by regimental tradition, for the drum major, pipe major, and/or commanding officer's piper to wear a beard. Beards are also permitted to special forces when on covert intelligence operations or behind enemy lines.

Question: are you allowed a beard in the royal marines
Answer: no