In a conversation recounted in his memoir 'Spare', the Duke of Sussex talked about the day when his military supervisor told him that he was being sent to Afghanistan.
This news came as a shock to Harry, and he felt like he had to find a way to get back into operations or else quit the Army.
He spoke to his superior, telling him that he needed to find a way to get back into the field.
The Colonel understood Harry's predicament and wanted to help him find a way back into operations. Although Iraq was permanently off the table, Afghanistan was still an option, and the Colonel suggested that it might be a safer option.
Harry was skeptical about this, as he knew that Afghanistan was a far more dangerous place than Iraq. However, he trusted his superior's judgment and agreed to be deployed to Afghanistan.