Football first appeared at the Paralympic Games in Athens 2004. It was played with 5 players on each side. 5-a-side emerged in Spain in the mid 1980s. All players must be B1 level of visual impairment although the goalkeeper may be sighted. The ball contains a bell for hearing.

Amputee football match in 1917

Early image of Amputee Football from 1917, although this is not a Paralympic sport
This is an image from Roehampton 1917 of amputee ex-servicemen playing football. Football did not feature as a rehabilitation sport at Stoke Mandeville Stadium and amputee football is not a Paralympic sport.