Right cover is a term used to describe a type of counter or counterward in historical swordfighting.
Arming Sword and Buckler
The term is applied to a counter illustrated in Royal Armouries MS I.33.
Right Cover is taken up by standing left foot forward, buckler is held at waist eight and facing 90 degrees to the right. The sword is held tucked next to the buckler (in the third position with the right wrist resting on the left.