Ditch defences against enfilading artillery, with a red device
Earth cast into the moat forms a shield; a large heraldic emblem drawn in red
The sheet gathers several rapid ink sketches of fortification earthworks and moat sections, annotated in mirror-script at the lower right. One note, keyed to the letter a, explains that earth thrown into the ditch forms a shield against artillery firing along the ditch's length, while a separate word marks a point of 'succour' or relief. At the left a large emblem is laid in with red wash, drawn as a pointed, shield-like device. Further faint annotations appear across the sheet that the bundle does not transcribe.
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Earth thrown into the ditch as a shield (a)
If a casts its earth into the ditch, it forms a shield against the artillery that batters along the length of the ditch. The point marked 'succour' identifies where relief reaches the defenders.
Large device in red wash
At the left of the sheet a large emblem is drawn in red, built as a pointed, shield-like device with an inner motif. It stands apart from the fortification studies as a decorative or heraldic design.