Amy, 26, a mum of one, was found dead at a house in Dryden Road, Balby on June 5 after suffering fatal injuries.
A 45-year-old man, Terence ‘Tez’ Papworth has been charged with her murder and is due to stand trial later this year.
Amy, a Private, served a tour of duty in Afghanistan and had been promoted to Lance Corporal but was discharged before taking up the post.
In an emotional tribute to Amy on Army Facebook page, Staff and Personnel Support, a spokesman said: “It is my extremely sad duty to inform you all of the recent passing of Amy-Leanne Stringfellow.
Amy-Leanne, or ‘Stringy’ as many will have affectionately called her, was a bright, promising and exemplar member of our Branch and I am confident many will hold her memory dear and remember her with fondness.
Amy enlisted into the British Army in October 2010 and following completion of her basic training in Winchester, she then became a military clerk
She completed assignments with 3rd Battalion the Rifles 3 RIFLES in Edinburgh and Chilwell before voluntarily discharging from service in 2015.
In 2012, Amy-Leanne completed an operational tour of duty in Afghanistan as part of the Operation Herrick 16 deployment. Also, she was pre-selected for promotion to Lance Corporal although she discharged before taking up the promotion.
In 2017, Amy-Leanne re-joined the Army as a Volunteer Reservist and also continued to work as a personal fitness trainer, which the tribute said was “something she was extremely passionate about and gifted with.”
The tribute added: “Amy-Leanne was a talented and experienced soldier who always showed great ambition. Strong-minded, she oozed confidence and had excellent interpersonal skills and always led others very much from the front.
“A soldier of exceptional level of fitness and one with clear potential and recommendation to complete the AA PTI course and for future employment with an Army (Reserve) training unit. I am confident Amy-Leanne would have been an absolute credit to the cap-badge.
“Amy-Leanne was without question, the ‘stand out’ soldier in my SPS Det and in reward was re-selected for promotion to LCpl on the last board. Fit, tough and every inch the part, Amy-Leanne was an excellent role model to our more junior soldiers, her passing leaves a very sizeable hole in the Det and one that will be extremely difficult to fill. Amy-Leanne will be sadly missed by all that knew her.
“Sleep peacefully Amy-Leanne.”
On Saturday, hundreds of people attended a vigil for Amy in Elmfield Park