AbstrakThe indonesian military (tni) following the fall of suharto in 1998 embarked military reform aiming at creating a professional military. The military gradually reduced its presence in non defence affairs, notably the withdrawal from the parliament in 2004. post 2004 indonesia also witnessed the ratification of the 2004 law on tni, marking crucial juncture in indonesia military reform progress. The military often cited looming internal thrests in early reformasi period as a strong justification to reject reform prescription. post 2004 security circumstance in the country was greatly improved compared to the early reform period. despite these marvellous achievements, millitary engagement in politics kept occuring. then the question is way expansion of military engagement in politics happened in the post 2004 period despite the existing of better regulations and stable political and security circumstance?