Kingsman Harrison Greaves, 19, was wounded by gunfire when his platoon came under attack in Helmand province in May last year.
He suffered from injuries to his left arm but did not notice he had been hit and continued to fight for another 20 minutes.
His future brother-in-law Corporal Chris McInerney, 24, was shot minutes later in the same fire-fight.
Harrison Greaves proposed to his future wife a year to the day that he was injured by the Taliban
'We went in to see Chris and I heard Harrison complaining about his earphones not working,' she explained.
'I saw him and I thought, "ooh he's alright". They were shot on the same day. They were in the same regiment but didn't really know each other before.
'They were injured in the same battle and were on the same helicopter out.'
She asked her brother about Mr Greaves, who was in the bed opposite, and discovered he helped wheel her brother into hospital.
Mr Greaves suffered from injuries to his left arm but did not notice he had been hit and continued to fight for another 20 minutes.
The care worker sent him a message praising his bravery and they started emailing and sending text messages to one another before arranging a first date two weeks later when he was discharged.
She said: 'I'm really happy now. Harrison and I think it's fate that he got shot because it allowed him to meet me.'
The pair tied the knot at a hotel in Darwen, Lancashire, and are planning their honeymoon before moving in together at Mr Greaves's UK military base.
Mrs Greaves wore a flowing white gown, with pink bridesmaids in tow, and Harrison, who has served in Canada and Cyprus, wore his military uniform for the civil ceremony in a Lancashire hotel.
She added: 'I'm excited to spend the rest of my life with him.'