These assault forces, and the beach units that were to land with them, came from different regions.
The Ist Canadian Infantry Division sailed direct from the U.K. bringing its own beach units. These were No. 3 Beach Group with No. 68 R.A.F. Beach Unit attached and No. 4 Beach Group with No. 69 R.A.F. Beach Unit attached.
The 231st Infantry Brigade, together with the 50th Infantry Division and the 5th Infantry Division came from Suez, Alexandria and Haifa at the eastern end of the Mediterranean. The beach organisations that supported these forces were Nos. 31, 32, 33 and 34 Beach Bricks, each of which had an R.A.F. Component.
The 51st Infantry Division came from Tunisia, some of it via Malta and the beach organisation they brought consisted of Nos. 20 and 21 Beach Groups. No R.A.F. beach units were attached.
The co-ordinating administrative headquarters for the beach organisation of 30 Corps was 103 Lines of Communication Sub Area and the senior R.A.F. officer at that H.Q. was Wing Commander Hackett. The equivalent H.Q. for 13th Corps was to begin with, 86 Lines of Communication Area and later, 151 Lines of Communication Area.
86 L. of C. Area, commanded by Brigadier H. C. N. Trollope, has been described as becoming “almost the 8th Army’s administrative ‘assault-force’ in the days of the advance to Tripoli in January 1943.” 1
Whilst no R.A.F. beach units accompanied 51st Division, R.A.F. beach units from North Africa were, however, attached to some of the American assault forces.