Morale patches are patches troops wear on their uniforms designed to be a funny inside joke, applicable only to their specific unit or military career field. They are usually worn during deployments, but the wear of morale patches is at the discretion of the unit’s commander.
The patches often (not always) make fun of a depressing, boring, or otherwise specific part of the job.These patches have been around since the military began to wear patches. They are collected and traded by people, both military and civilians, who come across them. Some are more popular than others, but they are usually a lot of fun.