 Strong became a director of Eagle Star Insurance and other companies . He wrote two books , his memoir , Intelligence at the Top ( 1970 ) , and Men of Intelligence ( 1970 ) . Unfortunately , both were written before the Ultra secret was revealed in 1974 . In 1979 he married a widow , Brita <unk> <unk> . Their marriage produced no children . Strong died at his home in Eastbourne , East Sussex on 11 January 1982 . His papers are in the Liddell Hart Centre for Military Archives . 
