POWs and Asian workers were also used to build the Kra Isthmus Railway from Chumphon to Kra Buri, and the Sumatra or Palembang Railway from Pekanbaru toMuaro.
The construction of the Burma Railway is counted as a war crime committed by Japan in Asia. Hiroshi Abe, the first lieutenant who supervised construction of the railway at Sonkrai where over 3,000 POWs died, was sentenced to death, later commuted to 15 years in prison, as a B/C class war criminal.
After the completion of the railroad, most of the POWs were then transported to Japan. Those left to maintain the line still suffered from appalling living conditions as well as increasing Allied air raids.