Split infinitives occur when additional words are included between to and the verb in an infinitive. Many readers find a single adverb splitting the infinitive to be acceptable, but this practice should be avoided in formal writing.
When he was 11 years old, Itachi was also under orders from his father to enroll in the Anbu half a year later. Itachi was praised highly by Fugaku, who spent most of his time grooming Itachi to inherit the title of leader of the Uchiha, and hence inadvertently neglected his younger son.
Itachi has always been depicted in Naruto as almost godly. For example, in the fight between Sasuke and Deidara, it flashes back to before Deidara joined the Akatsuki. When Itachi casts his genjutsu on Deidara, he is depicted with beams of light behind him in almost a floating stance. Itachi has also always been completely selfless and done what is right.