▁Following ▁his ▁rep atri ation , ▁Sen ▁was ▁promoted ▁lieutenant ▁on ▁ 1 7 ▁April ▁ 1 9 1 9 , ▁and ▁was ▁transferred ▁to ▁the ▁un emp loy ed ▁list ▁of ▁the ▁R AF ▁on ▁ 2 3 ▁May . ▁He ▁returned ▁to ▁India ▁and ▁joined ▁the ▁Indian ▁Imperial ▁Police ▁as ▁an ▁assistant ▁super int endent ▁( j un ior ▁scale , ▁on ▁prob ation ) ▁with ▁effect ▁from ▁ 2 0 ▁September ▁ 1 9 2 1 . ▁By ▁ 1 9 2 5 , ▁he ▁was ▁serving ▁in ▁eastern ▁Beng al ▁in ▁the ▁Com illa ▁District ▁( now ▁in ▁Bang l adesh ). ▁▁ ▁Sen ▁and ▁his ▁brother ▁subsequently ▁re located ▁to ▁R ango on , ▁Bur ma , ▁where ▁they ▁found ▁work . ▁Following ▁the ▁Japanese ▁attack ▁on ▁Pear l ▁Har bor ▁in ▁December ▁ 1 9 4 1 , ▁Sen ▁re - en list ed ▁in ▁the ▁R AF , ▁but ▁was ▁unable ▁to ▁find ▁a ▁means ▁to ▁leave ▁Bur ma . ▁He ▁tried ▁to ▁walk ▁out ▁of ▁the ▁country , ▁and ▁is ▁believed ▁to ▁have ▁died ▁in ▁the ▁attempt . ▁ ▁References ▁ ▁Category : Ro yal ▁F lying ▁Corps ▁officers ▁Category : Ro yal ▁Air ▁Force ▁officers ▁Category : Mil it ary ▁personnel ▁from ▁Kol k ata ▁Category : B eng ali ▁people ▁Category : Pe ople ▁educated ▁at ▁Ross all ▁School ▁Category : B rit ish ▁Army ▁personnel ▁of ▁World ▁War ▁I ▁Category : Ind ian ▁military ▁personnel ▁of ▁World ▁War ▁I ▁Category : Ro