41 Indian beach group

So my Grandfather was in 1 Btn RWF for his 7 years colour and 5 years as reserve, then over to 2nd Btn when mobilized.
Having got his service records from NA it pans out as follows.....most I have gleaned from the books
Regimental records of the Royal Welch Fusiliers.
The bit I need more info is his role in the Indian Beach Grp's? Anybody throw any light on where they were etc??

William Frederick Midson 4188019
1st Btn RWF
UK: 28/12/1927--13/9/1928
Germany: 14/8/1928--19/10/1929
UK: 20/10/1929--20/1/1930
India: 21/1/1930--19/12/1930
Egypt: 20/12/1930--8/1/1931
Cyprus: 9/1/1931--7/5/1932
UK: 8/5/32--22/12/1934
Reserves: 28/12/1934--15/3/1940

Mobilized UK: 16/3/1940--25/5/1942
2nd Btn RWF
Madagascar: 26/5/1942--6/11/1942
South Africa: 7/11/1942--7/1/1943
India: 8/1/1943--2/9/1944
India: 3/9/1944--7/11/1945
UK : 8/11/1945--25/2/1946
Z/R 26/2/1946--10/2/1954

So the bit I'm interested in is.

Attached ITC KSLI 6/8/1941........(infantry training center) with (Kings Shropshire Light Infantry) ??
Posted to 60th Welsh 19/8/1941
Back to 2nd RWF..Ist line reinforcement 25/11/1941
????
Posted to No 3 MC Grp 31/10/1943
Posted to 7 Spec MC Grp 1/2/1944
Hospital 14/4/1944
Admitted 9 C.C.S 3/8/1944 (casualty Clearing Station) ??
Back to 7 Spec MC Grp
HQ 41 Indian beach Grp

Thanks in advance.

The Imperial War Museum holds a file on the 41st Indian Beach Group taken from the Malayan News dated 22/10/1945. Catalogue number : Document 5029.
The National Archives Kew also hold some information under Burma: Beach Groups : 41 Indian Beach Group : H.Q., for the period January 1945 to December, 1945.
Neither of these documents are available on line.

Cheers Dave

Thanks, actually I do have the WO/ numbers for the NA and will jump on the tube for the day in the summer. I didn't know about the war museum holding a file, so that's something I'll definitely explore. Thx Dave