YOU SAID:

I sent my brother out to get milk.

INTO JAPANESE

私は弟を送って牛乳を手に入れた。

BACK INTO ENGLISH

I sent my brother to get some milk.

INTO JAPANESE

私は弟にミルクをもらうために送った。

BACK INTO ENGLISH

I sent my brother to get milk.

INTO JAPANESE

私は弟をミルクを手に入れに行った。

BACK INTO ENGLISH

I went to get my brother some milk.

INTO JAPANESE

私は弟にミルクを買いに行った。

BACK INTO ENGLISH

I went to buy milk for my brother.

INTO JAPANESE

私は弟のためにミルクを買いに行った。

BACK INTO ENGLISH

I went to buy milk for my brother.