Field punishment could be awarded by a court martial or a commanding officer for any offence committed on active service.
There were two categories field punishment. Field punishment No. 1 consisted of heavy labouring duties, possibly being restrained in handcuffs or fetters, and being tied to a post or wheel. Field punishment No. 2 differed, in that the offender was not liable to be attached to a fixed object.
Extract from Manual of military law, HMSO, London, 1914