YOU SAID:
I have went to war, to fight for the motherland.
INTO JAPANESE
私は祖国のために戦うために戦争に行きました。
BACK INTO ENGLISH
I went to war to fight for my country.
INTO JAPANESE
私は私の国のために戦うために戦争に行きました。
BACK INTO ENGLISH
I went to war to fight for my country.
That didn't even make that much sense in English.