 In October 1945, aged just 13, Moerdani took part in an assault on a Kempeitai headquarters in Solo after the Kempetai refused to surrender to the Indonesian troops.When the People's Security Army (TKR), the precursor to the ABRI was formed, Moerdani joined a Student Army (Tentara Pelajar) which came under the authority of an ABRI Brigade.From this brigade, Moerdani took part in the Indonesian National Revolution against the Netherlands, the highlight of which saw him participating in a successful general offensive on Solo.