On Sunday, he said his "first job" was to reverse a decline in numbers with a target to return to a strength of 73,000 full-time soldiers "in the next Parliament".
The Lockerbie laundry has become a symbol of the kindness shown by the people of the town. They treated the dead and their families with love and care while coping with their own immeasurable trauma.Colyn says: "Just thinking about it now makes me emotional. Because these people, they don't know you, they've never met you. But the way they treated you is as if they were family.
"The people of Lockerbie showed how humanity works. How to display compassion, to display love. I'll never forget them."I don't know if it's quite macabre to say this but I've always said I am glad that's the place that my sister's life was ended. Because of the type of people that live in this place."The events of the night of 21 December 1988 have resonated across the decades.
In 2001, a Libyan intelligence officer, Abdelbaset Ali al-Megrahi, was convicted of the bombing and 270 counts of murder, following a trial in front of three Scottish judges sitting in a special court at Camp Zeist in the Netherlands.His co-accused, Al Amin Khalifa Fhimah, was found not guilty.
Suffering from terminal prostate cancer, Megrahi was released from prison in Scotland on compassionate grounds in 2009.
He was returned to Libya and spent the next three years living in a villa in Tripoli before finally succumbing to his illness in 2012."He said 'What do you think of the pension, Ernie?'," Mr Williams told BBC West Investigations.
"I said, 'Well £440 a year is not very good, is it?'"And he said 'No it's £880 a year'."
It transpired that during the intervening two years, military pension rules had changed and had Mr Williams been given the later discharge date he would have got a much better pension.The Ministry of Defence said it cannot comment on individual cases, but during his time campaigning Mr Williams has been told that his pension reflected his "full and correct entitlement".