At that time Zulkifli Lubis began reading the Deli Blaad newspaper, which he obtained from a friend who was selling it.

Through Deli Blaad, Zulkifli got to know the speeches of Sukarno, Hatta, Mohammad Husni Thamrin and debates in the Volksraad.

[1] When Japan occupied the Dutch East Indies, Zulkifli Lubis followed his friend's invitation to take part in youth training organized by the Japanese Army instead of being unemployed.

At Resentai Bogor, Zulkifli did not acquire sufficient military knowledge and skills, given that the education only lasted for 3 months.

[4] In December 1943, the shodancho were appointed and then returned to their respective cities or regions of origin to participate in the formation of daidan (battalions).

Second Lieutenants Zulkifli Lubis, Kemal Idris, Sabirin Mochtar, Satibi Darwis, Daan Mogot, Effendi, and Kusnowibowo helped Captain Tsuhiya Kiso to prepare for the formation of daidans on the island of Bali.

Zulkifli Lubis, Kemal Idris and Daan Mogot were involved in a special team called Boei Giyugun Shidobu with the task of dealing with matters concerning the PETA battalions.

[3] In the middle of 1944, Zulikfli Lubis was invited by Rokugawa (former commander of the Seinen Dojo) to Malaysia and Japanese occupied Singapore.

[6] In April 1946, the PMC branch in Purwakarta received fierce opposition from the army, because it was accused of carrying out a series of arbitrary arrests and seizures.

[6] Zulkifli Lubis was able to cover his tracks after taking action and was granted a pardon from President Sukarno for his involvement in the 3 July 1946 Incident.

Zukifli had sympathies for the officers in the regions, and wanted to oppose the central government, Afterwards, Zulkifli Lubis became a fugitive until the fall of Sukarno.

[11] Zulkifli died in Jakarta on 23 June 1993, at the age of 69 and was buried at Dreded Heroes Cemetery, Bogor, West Java.