The probe of a former Chinese military leader demonstrates that no areas of the People's Liberation Army are off limits to the country's campaign against corruption, according to a commentary in the PLA Daily on Sunday.

The investigation found Guo Boxiong, former vice chairman of the Central Military Commission, took advantage of his post to seek promotions and benefits for others and accepted bribes personally or through his family.

Guo has been expelled from the Communist Party of China and his case has been transferred to military prosecutors.

The article said the army does not tolerate corruption.

It said the graft cases of Guo and Xu Caihou, the former military leader who was put under investigation for corruption last year and died of bladder cancer in March, had caused profound damage to the army.

History shows that an army would fail without fighting if it does not stamp out corruption, according to the commentary.

It warned that this situation may reemerge if the war on corruption relents and called for better regulations and rules to help prevent graft.