"But it was very hard for me to let him go, especially potentially to a war-zone where he will be at risk. He was a part of my family for 11 months and I came close to adopting him several times - every time a potential adopter looked at him, then decided to go with something cuter. I know I have made the right decision for him though."
Ms Sweeting said Brutus was like a pup with obsessive compulsive disorder, particularly when playing with balls.
She contacted New Zealand Detector Dogs (NZDD) in December thinking he could be a drug or customs dog and he was put through some basic training which he passed with flying colours. Last month NZDD handler/trainer Guus Knopers came to give him further tests.
He knew within minutes Brutus had what it took and reckoned he was in the top 5 per cent of dogs he had trained in more than 30 years.
"When you've been training dogs that long you just know by looking at a dog sometimes, at what he does. Brutus was one of those dogs and you could see by the way he wanted that ball. You'd throw a ball into long grass and Brutus wouldn't stop looking until he found it."
Trainers from the unnamed foreign - but friendly - army are putting Brutus through his final pre-training today - including scent detection and obedience - but Mr Knopers was "100 per cent certain" that Brutus would make the grade and fly off to a new life soon.
"He'll be part of an army unit, part of the team who will be a very, very valuable and well respected member who will be saving people's lives."