 The British Commandos were instrumental in founding many other international commando units during World War II.Some international commando units were formed from members who served as part of or alongside British Commandos, such as the Dutch Korps Commandotroepen (who still wear the recognition flash insignia of the British Fairbairn-Sykes Fighting Knife), the Belgian 5th Special Air Service, or Greek Sacred Band.In 1944 the SAS Brigade was formed from the British 1st and 2nd SAS, the French 3rd and 4th SAS, and the Belgian 5th SAS.