It looks like he shrank the entire map in order to accommodate the new border. This is mostly obvious in the territory digits, which won't be in the final map, but it also had some effect on the soldier and cannon images. He probably needs to go back to the originals for those images and rescale them before putting them on the map.
Also, GH, your version on page 25 is different from V31 shown on page 1. Page 1 should be kept up-to-date with the latest version. And Including a date for each map on page 1 would be nice, too.
One last word in defense of cannon fire. These are obviously rapid-fire cannons if they all have 3-4 cannonballs impacting the dirt at the same time, so the cannon flash is for the next round that is being fired.