Lines 1 & 2 – nothing important/ no information about the man.
Line 3 (blue writing):
Showa 18 (i.e. 1943) [no specified date], transferred to the No. 2 Branch Camp of Thai POW Camp
Line 4 (1st line of red writing):
Showa 18 (i.e. 1943) 9th month (September) 26th, died. Cause of death, malnutrition. Buried. Died at 4 o’clock
Line 5 (2nd line of red writing):
Showa 18 (i.e. 1943) 9th month (September) 26th, died. JA78 P4673
Line 6 (blue writing):
Showa 18 (i.e. 1943) 3rd month (March) 7th, fell ill
Line 7 (blue & black writing):
Place of death, Thailand, Kanchanaburi gun (Kanchanaburi county), Wanyai
Line 8 (last line):
Buried at Wanyai Cemetery (JA181)
*****
Kanchanaburi Province is the location of the Thai-Burma Railway construction (Bridge over the River Kwai).
The Commonwealth War Graves Commission has a list of 27 men buried on that date in Thailand
e.g. Kanchanaburi Cemetery.
https://www.cwgc.org/find/find-war-dead/results?country=Thailand&war=2&exactDate=26-09-1943&tab=wardead&pageSize=50&casualtypagenumber=1*****
Here is a very similar card for a Dutch man which has already been translated.
https://www.openarch.nl/ghn:54dfd65a-b932-4ef1-a638-778192206def/enUKgirl