Barleywine
The image is a simple illustration of a victory march (rather than going off to battle). Similar images are found on many of the illustrative works of the period - especially when illustrating Arthurian themes. To make too much of the details in most of the Minors when establishing core meanings - except as they serve to remind you of those core meanings - is to get off track. However, the details can be extremely important in any individual reading if you use projective techniques—i.e., what the details trigger in the moment that is related to that moment in time.
Funny, I had the notion that a victory march occurs after a battle, when the victorious army marches back into the city. Are we sure they were all "staged" holiday parades like we have these days?