The field of care management at Uniklinik RWTH Aachen opens many ways to do an internship. It can be done on voluntary basis for vocational orientation or also related to the educational or vocational development.
The minimum age for an internship in the nursing sector is 15 years.
You can find detailed information here:
Frequently asked questions about a nursing internship (German)
Learning catalogue for nursing internship related to the study of human medicine (German)