The units have a long history of cooperation and the Royal Highland Fusiliers are hosting their French comrades for the next few weeks.
The French troops are visiting to train with soldiers from 2 SCOTS.
Based in the Alps along the French-Swiss border, Chasseurs Alpins units generally operate in mountainous terrain but are also adept in urban warfare.
The close relationship with 2 SCOTS allows both units to share expertise and work with each other closely.
One of their number became one of the first French soldiers to be awarded a campaign medal by the British Army since the Second World War - after serving with the Fusiliers on Operation Shader in Iraq.
While they are over here learning from their hosts - both sides are benefitting from the training.