I need to define a date on which the Royal Marine Artillery (the Blue Marines) and the Royal Marines Light Infantry (the Red Marines)began their separate histories. From several sources I have two dates:
30 January 1855: “The Royal Marines designated as a Light Corps and became the RMA and the RMLI”.
21 March 1862: “The RM divided into two separate corps, the RMA and the RMLI, until 1923 when they amalgamated”.
Can any member clarify these apparently conflicting dates?