1972 the constitution of Bangladesh has become first effected, then the government of then a government of and then period thought that there is no exhaustive law to trial the offender with the war. So it ended up being the demand of this period the war criminal must be prosecuted. To offset that situation, in 15th July 1973 the 1st amendment had been described. Who is a part of any armed or defense or perhaps auxiliary forces or anyone, group individuals or perhaps organization or that’s a prisoner involving war, for Genocide, Crimes against mankind or war crimes as well as other crimes under international law will likely be deemed void or perhaps unlawful or ever to get become void or perhaps unlawful, in the bottom that such law or provision of such law is inconsistent with or repugnant to help, any of the provisions with this constitution. So, they’re the emery involving nation, that’s why to help convict the war criminal the 1st amendment had been described.