Hundreds of Turks rallied in Recklinghausen on Sunday to show support for Turkish troops, which are on a military offensive in north-eastern Syria.
Footage shows protesters draped in flags of Turkey doing a military salute while singing the national anthem.
The protest was reportedly called on to defend Turkish football players who performed a military salute during a Euro qualifier match against France. The salute reportedly sparked similar moves by Turkish players in German amateur football teams.
Police were also present on-site to monitor the situation.