Layforce was an ad hoc military formation of the British Army consisting of a number of commando units during the Second World War. Formed in February 1941 under the command of Colonel Robert Laycock, after whom the force was named, it consisted of approximately 2,000 men and served in the Middle Eastern theatre of operations. Initially tasked with conducting raiding operations to disrupt Axis lines of communication in the Mediterranean it was planned that they would take part in operations to capture the Greek island of Rhodes.

The Commandos, also known as the British Commandos, were formed during the Second World War in June 1940, following a request from Winston Churchill, for special forces that could carry out raids against German-occupied Europe. Initially drawn from within the British Army from soldiers who volunteered for the Special Service Brigade, the Commandos' ranks would eventually be filled by members of all branches of the British Armed Forces and a number of foreign volunteers from German-occupied countries. By the end of the war 25,000 men had passed through the Commando course at Achnacarry. This total includes not only the British volunteers, but volunteers from Greece, France, Belgium, Netherlands, Canada, Norway and Poland. The United States Army Rangers and US Marine Corps Raiders, Portuguese Fuzileiros Portuguese Marine Corps were modelled on the Commandos.