He will also be the subject of a Sexual Harm Prevention Order when he is released.
Barry Gilbert, mitigating, said it was “very difficult to find any mitigation here” but said the offences were not categorised as a “campaign”.
Speaking to Chilton, Judge Christopher Morgan said: “There is one side to your character where you can demonstrate empathy and understanding and assistance to other individuals.
“You have worked hard during your adult life. You have progressed in your employment and also have activities within the community, which support good order within the community, including training for football and your Army reservist position.