Kawilarang was born in
Batavia (now known as
Jakarta) on 23 February 1920. His father, Alexander Herman Hermanus Kawilarang, was a major in the
Royal Netherlands East Indies Army (KNIL or
Koninklijk Nederlands Indisch Leger). His mother was Nelly Betsy Mogot. Both parents were from the
Minahasa region in
North Sulawesi. Kawilarang enjoyed European-style education that included attending the Dutch secondary school (HBS or
Hogere burgerschool) in
Bandung. Around 1940, he attended the Dutch military academy or
Koninklijke Militaire Academie that was moved to Bandung, because of the
German occupation of the Netherlands. His classmates included
A. H. Nasution and
T. B. Simatupang. After graduating from the academy, he was stationed in
Magelang as a platoon commander and assigned back to Bandung as an instructor. During the
Japanese occupation,
Manadonese (
Minahasan),
Ambonese, and
Indo people were often arbitrarily arrested during raids due to their perceived closeness to the Dutch. Many were severely tortured by the
Kempeitai. Kawilarang was tortured several times by the Japanese in 1943 and 1944. He survived but suffered lifelong disability in his right arm and numerous scars. Kawilarang recalls: "Someone in the warung [food stall] said: 'Japan will grant the Indonesian people its freedom.' I could not ascribe any sense at all to such small talk. Impossible! That was my opinion. But I remained silent. I didn't feel much for more torture ... A newspaper wrote: 'Japan is an old friend.' Lies! I thought. Kawilarang slowly developed an appreciation for the rhetoric of the charismatic Indonesian nationalist
Sukarno and became strongly convinced that the time for an independent Indonesian state had arrived. In 1944, Kawilarang's father was presumed killed while he was a
POW on the Japanese cargo ship
Junyo Maru (see his father's Japanese detention card on the Dutch National Archives website). The ship was carrying 3,000 Menadonese, Ambonese, Indo-European, Dutch, British, Australian, and American POWs, and over 3,500 Javanese
Romusha when it was sunk by the British submarine
HMS Tradewind. Kawilarang recalls being told about the tragedy: "I prayed in silence. I did not cry. The Japanese had given me enough practice in digesting pain and suffering in silence." For the remainder of the war, Kawilarang worked in several private companies in
Sumatra, the last of which was as chief of a rubber factory in Tanjung Karang (now
Bandar Lampung) in
South Sumatra. ==Indonesian National Revolution==