Some info can be gained from Wikipedia and the Fusilier Museum about the involvement in the Far East…
The 1st Battalion (Royal Warwicks) spent most of the war on garrison/internal security duties in India, then trained for jungle warfare and took part in the final stages of the Burma campaign (including the period around the capture of Rangoon/Operation Dracula in 1945).
Some “Warwickshire” units were re-roled into anti-aircraft / artillery formations and served in the Burma campaign (they still counted as Royal Warwickshire in lineage terms). Wikipedia notes, for example, that the pre-war 5th Battalion had been converted to an anti-aircraft unit and later served in Burma as part of 36th Indian Infantry Division.
There are also indications (from the regimental museum context) that some Royal Warwickshire soldiers became Chindits (the long-range penetration groups operating in Burma).
Individuals from the Royal Warwicks could certainly have ended up in other Far Eastern locations via attachments, postings, or transfers.