Reference
Patches, measured properly.
Where a patch goes, what it is made of, how to attach it so it survives a wash, and what the symbols on it mean. Drawn to scale, sourced where a regulation exists, and free to print.
Four things people get wrong about patches
Placement
Where the patch actually goes — by branch, by garment, by rank. Each guide cites the governing publication and the date it was checked.
Patch types
Embroidered, woven, PVC, chenille, leather and sublimated — what each survives, what each costs, and which one is wrong for your job.
Application
Iron-on, sew-on, velcro and adhesive. Temperatures, dwell times, the fabrics that refuse heat, and why a corner lifts after one wash.
Insignia
What the symbols mean. Military heraldry, club colours and the conventions around them. Documentary, not instructional.