Ahh, the UNIT family -- one of my favorite things about the Pertwee era.

May be wrong, but the eyepatch thing probably refers to Inferno (as opposed to The Inferno, which was a Troughton ep), in which a certain character was obliged to wear an eyepatch. Pertwee's book I Am The Doctor mentions that one day the whole cast showed up with eyepatches for a joke.

Klatch... um... means coffee in German and is a furrin country on the Disc.... now I really want to know what that's all about.