In addition, their radical anti-colonialism was anathema to British authorities which had Ibrahim and other KMM leaders arrested in 1942.

Pamphlets from the Partai Nasional Indonesia were spread locally, advocating non- compliance with the British and resistance to colonial rule.

Along with him, other alumni of the college that were active in KMM were Hassan Manan, Abdul Karim Rashid and Mohd.

[5] After the establishment of its main branch in Kuala Lumpur, Malay school teachers, most of whom had graduated from SITC continued to spread KMM's wings throughout Malaya.

[5] During the eve of the Second World War, KMM, Ibrahim Yaacob and his colleagues actively encouraged anti-British sentiments.

The Japanese also aided KMM and financed Ibrahim Yaacob's purchased of an influential Malay publication called Warta Malaya in Singapore.

[3] These led to the disbandment of KMM and establishment of the Malayan Volunteer Army (マライ義勇軍, Marai Giyūgun) in its stead with Ibrahim Yaacob made the commander-in-chief with lieutenant-colonel rank.