Understanding family categorisations Learn about categorisation types and who Defence recognises as dependants. Who Defence recognises as dependants Dependants are usually immediate family members who live with you. Find out who can be a recognised dependant. Apply to get your relationship recognised Find out how to get your new relationship, marriage or partnership recognised by Defence. Add, remove or update a dependant Find out what to do when you need to add, remove or update a dependant. Register your dependant's special needs Find out how to get a dependant recognised for special needs benefits. Change your categorisation Apply to change your categorisation when your circumstances change.