This is a guided tour of the illustration on p. 64 in the Chase reading. Quoting a section from Chase's text, let me walk you through the details....
Figure 3.1 [above] shows a detail from an imaginary battle and siege scene from a book published in 1565.
The upper left-hand corner shows a body of a pikemen (marked R) marching in a formation with their pikes held
vertically. In front of them is an officer on horseback.
Behind them are musketeers marching in columns (marked S), also led by officers on horseback.
The men with halberds are the equivalent of noncommissioned officers,
charged with keeping the common soldiers in formation.
Man with a halberd.
The overall impression is of a closely ordered and crowded battlefield, although the formations did not necessarily
survive the stress of combat, as the melee in the upper right-hand corner suggests.
The upper right-hand corner also shows two bodies of lancers (marked E and F).
A body of dragoons is depicted at the bottom of the original engraving, but none of them appear within this detail.
The siege takes place in the bottom half of the picture.
The bottom left-hand corner shows the cannon park (marked P), together with
siege implements like ladders and fascines (bundles of sticks) or gabions (baskets filled with dirt).
Gabions (portable defensive barriers- cages or baskets filled with dirt or rubble)
A group of sappers (marked AA) carries standards bearing picks and shovels.
[There is another group of sappers at the top too. Sappers were to people who would dig under
the walls of a castle and destabilize the ground so that the walls would cave in.]
The bottom right-hand corner shows the castle under siege (marked B), surrounded by
siege cannon (marked G) protected by gabions. [Notice how the gabions surround and
protect the cannons and give the artillery men a place to hide, both from enemy fire
and from possible misfires of their own cannons.] Infantry (marked C) sortie from the castle.
Although the engraving dates from the mid-1500s, the castle seems to be rather old-fashioned,
with rounded walls and high battlements, not the new style of fortification that was introduced in the early 1500s to withstand artillery.