YOU SAID:

i have committed several war crimes

INTO JAPANESE

私はいくつかの戦争犯罪を犯しました

BACK INTO ENGLISH

I committed some war crimes

INTO JAPANESE

戦争犯罪を犯した

BACK INTO ENGLISH

Committed a war crime

INTO JAPANESE

戦争犯罪を犯した

BACK INTO ENGLISH

Committed a war crime