This is the Battle Order Style Icon library, which can be used with any raster program (e.g. Photoshop, GIMP, paint.net, MSPaint). If you own Adobe Illustrator, this is my personal .ai working file containing symbols, chart components.

unit sizes

Task Organized
Versions

mobility
modifiers

Infantry

armor &
recon

artillery &
Air defense

combat
support &
medical

service
support

Aviation

Chart
Templates

Stacking