[citation needed] After having served in the General Staff in Bandung for two years, in 1934 he took a position as teacher of strategy and tactics at the Royal Military Academy in Breda.

[citation needed] In 1938, Spoor returned to the Dutch East Indies, as Head of the Political Affairs Department of the General Staff and the Higher War College in Bandung.

By Royal Decree of 19 January 1946, the then 44-year-old Colonel Spoor was appointed army commander in the Dutch East Indies with the temporary rank of lieutenant general.

Some critics say he was poisoned,[citation needed] the Dutch historian Jaap de Moor explains in his biography about General Spoor that he was just an 'overworked man'.

[citation needed] In April 2009, his widow, Mans Spoor-Dijkema, gave Spoor's medals to Bronbeek museum where his uniform was already exhibited.