Different historians have cited other reasons for the INA's recruits volunteering to serve with the Japanese enemy. These included both the ideal of wanting to fight for India's independence, the inevitable desire not to be interned in the POW camp, as well as ambition. Some cite the destruction and devaluation of the Raj's prestige and authority in the Malayan debacle and the humiliating surrender at Singapore that first shook the Sepoys' loyalty to the Raj. In addition, a number of authors have cited the disparity in the service conditions (including scopes of progression in the army) and treatment of white and Indian troops within the army as another reason for ill-feelings within the Indian troops.