Are there any countries armies that use a left handed salute?

The British Army during the Victorian era.

https://en.wikipedia.org/wiki/Salute#Military_salutes

Saluting with Left hand: A soldier can salute with the left hand when the right hand is encumbered in some way, for example, a soldier with a rifle at Right Shoulder Arms; if movement of a weapon would be encumbered when making the armed salute; if the performance of duty requires the right hand for use or operation of equipment such as riding a motorcycle; if it is not possible to use the hand due to injury or amputation; when escorting a woman and it is not possible to walk on her right side.

https://en.wikipedia.org/?title=Salute