And when I came home on leave, he saw to it that I visited his office. (Para. 11)
Meaning: And when I came home from the Navy for a holiday, he made sure that I visited his office.
The verb phrase "see to" means "take care, make sure". When this phrase is followed by a that-clause, we can either say "... see to it that-clause" or simply "... see that-clause". Please look at the following examples:
Father saw to it that much of my spare time was not wasted.父亲极力注意不让我的许多业余时间白白浪费。
See that you are not late again. 务请注意不要再迟到。