The buttons were first invented for sleeves after soldiers kept wiping their noses on their button-free clothes in the 18th century.
There are sources claims that the origin of sleeves buttons was in the 18th century. Commanders ordered these brass buttons to be sewn on the front of the sleeve cuffs of expensive. This was done to make sure that the soldiers and the sailors do not wipe their mouths and noses on their sleeves.
There is a belief that this action was taken in the concern of boys, young recruits, and men. As per sources, the boys cried a lot and used to wipe their tears and nose with sleeves. So the buttons were sewn to make it difficult for them. Every time a soldier tries to wipe his face or nose, his face would scratch by the button.