This is a Royal Artillery tracer card which the RA record offices used to keep track of where a man was. Hopefully to can link the following with the dates.
It has his service number at the top.
Enlisted 30 September 1940
First unit was 62 Light Anti Aircraft Regiment (in London)
Next 246 Battery of 34 Light Anti Aircraft Regiment (Swansea)
Then C Depot Royal Artillery (UK not sure where)
He is then next in North Africa away from a "normal" regiment on an ERE (extra regimentally employed) posting to the British Liaison section of Headquarters Allied Forces N Africa
Next in Italy (CMF) in August 1945
On his way home inn Sep 1945 and released in December 1945
The various hieroglyphics can safely be ignored.
His attestation is recorded in the RA Attestation register on Findmypast (free till tomorrow):
https://search.findmypast.co.uk/record?id=GBM%2FROYALART%2F1704001-1705000%2F00061&parentid=GBM%2FROYALART%2F556235This also has 65 LAA Regiment and a date 25 Oct 1941 which must have fitted in somewhere between 62 and 34 LAA Regiments.
It isn't really possible to tell anything more from this card, you need to get his service record for that so that exact start and finish dates at the various units can be determined and his trade and promotions can be found.
https://www.gov.uk/get-copy-military-service-recordsMaxD