Germany has been a long-standing member of WAMSB. Below are some of the major events that are WAMSB sanctioned each year.
Rasteder Musiktag:
http://www.rastedermusiktage.de
BDMV:
http://www.bdmv-online.de/
German Music festival and Open German
Championships in 2019:
http://spielleutemusik.bdmv-online.de/