|42 Commando, Royal Marines|
Cap Badge of the Royal Marines
|Part of||Naval Service|
|Garrison/HQ||Bickleigh Barracks, Devon|
|Motto||Per Mare Per Terram (By Sea By Land) (Latin)|
|Captain-General||HRH The Duke of Edinburgh (Captain-General, Royal Marines)|
42 Commando Royal Marines (pronounced: "Four Two Commando") is a battalion sized formation of the British Royal Marines and a subordinate unit within 3 Commando Brigade, the principal Commando formation, under the Operational Command of Commander in Chief Fleet.
Tasked as a Commando light infantry unit, 42 Cdo RM is capable of a wide range of operational tasks. Based at Bickleigh Barracks near Plymouth, personnel regularly deploy outside the United Kingdom on operations or training. Whilst 3 Commando Brigade RM are the principal cold weather warfare formation, personnel are capable of operating in a variety of theatres including tropical jungle, desert or mountainous terrain.
All personnel will have completed the Commando course at the Commando Training Centre(CTCRM) at Lympstone in Devon, entitling them to wear the green beret, with attached personnel having completed the All Arms Commando Course.
Second World War
No. 42 (Royal Marine) Commando was raised in August 1943, under the command of Lieutenant Colonel R C de M. Leathes from the 1st Royal Marine Battalion, as part of the expansion of the commandos. They were assigned to the 3rd Special Service Brigade and served in India and Burma in 1943–45, including operations in the Arakan and Assam. It took part in the third Arakan campaign and carried out a series of amphibious landings down the Burmese coastline. Including the landings at Myebon and the Battle of Hill 170. It then returned to India to prepare for Operation Zipper the invasion of British Malaya. The war ended before the operation began and the commando was diverted to reoccupy Hong Kong.
Following the Second World War 1st, 2nd and 4th commando brigades disbanded leaving only one brigade – the 3rd (40(RM), 42(RM) and 45(RM)). The Commando was involved in operations during the confrontation with Indonesia (Borneo). It was during this tour that the famous Limbang raid was conducted by Lima Company. Throughout the following decade it was based in Singapore at HMS Simbang (RNAS Sembawang).
Return to UK
After the return to the UK, the Commando was deployed to Northern Ireland, the New Hebrides in 1980 and exercised regularly overseas. More recently the Commando has seen operational service in South Georgia, Montserrat in 1995, Iraq and Afghanistan. 
In 1982, following the Argentine invasion of the Falkland Islands, the Commando deployed on Operation Corporate. On 21 May the Commando were Brigade reserve at San Carlos under Lt. Col. Nick Vaux RM. The unit was deployed to seize Mount Kent in a night move by helicopter. By 4 June the unit had moved forward, mostly under cover of darkness, to positions west of high ground overlooking Port Stanley and the last Argentine stronghold. After days of probing reconnaissance, a Brigade assault took place on the night of 11/12 June in which the Commando's task was to secure Mount Harriet on the Brigade right flank.
By moonlight and in freezing temperatures, 42 Commando moved undetected through enemy minefields in a 9 km right-flanking movement to surprise the enemy in their rear. Consecutive assaults by "K" and "L" Companies followed, up steep slopes onto company positions. Against strong resistance and continuous artillery bombardment, the Marines prevailed. By first light more than 30 enemy had been killed and over 300 prisoners taken as 42 Commando consolidated on Mount Harriet. 42 Commando suffered 2 fatalities themselves – one on Mount Harriet and one on Wall Mountain.
The new millennium saw the Commando deploy on Operation Telic 1 for the invasion of Iraq in 2003 where they launched a helicopter assault on the Al-Faw Peninsula to support 40 Commando. The unit returned from Operation Herrick in Afghanistan on 16 April 2009, where it served as the Regional Battle Group (South). In essence, it was the Divisional Reserve. It served several operations alongside 3rd Battalion, The Royal Canadian Regiment, with whom it has maintained ties.
Commanders have included:
- 1948–1950 Lt. Col. Ian Riches
- 1963–1965 Lt. Col. Ian Gourlay
- 1965–1966 Lt. Col. Peter Whiteley
- 1970–1972 Lt. Col. John Richards
- 1972–1973 Lt. Col. Jeremy Moore
- 1978–1980 Lt. Col. Henry Beverley
- 1981–1983 Lt. Col. Nick Vaux
- 1988–1990 Lt. Col. David Pennefather
- 1990–1992 Lt. Col. Nick Robinson
- 1992–1994 Lt. Col. Robert Fulton
- 2000–2001 Lt. Col. Andy Salmon
- 2003–2003 Lt. Col. Buster Howes
- 2012-Present Day Lt. Col. Neil Sutherland
- Chappell, Mike (1996). Army Commandos 1940–1945. Osprey Publishing. ISBN 1-85532-579-9.
- Haskew, Michael E (2007). Encyclopaedia of Elite Forces in the Second World War. Pen and Sword. ISBN 978-1-84415-577-4.
- Miller, Russell (1981). The Commandos. Time-Life Books. ISBN 0-8094-3399-0.
- Moreman, Timothy Robert (2006). British Commandos 1940–46. Osprey Publishing. ISBN 1-84176-986-X.