Gannibal returned to Russia the following year .
Gannibal 's advanced training Gannibal him to apply and successfully acquire posts first as an engineer and then as a mathematics tutor for one of the Tsar 's private guard units .
Gannibal returned to Russia the following year and his advanced training enabled him to apply and successfully acquire posts first as an engineer and then as a mathematics tutor for one of the Tsar 's private guard units .