Now also announced by Notts...
"We’ll kick off the trip with a visit to SV Darmstadt’s 17,800-capacity Merck-Stadion am B?llenfalltor on 9 July (6.30pm local), before visiting FC Kaiserslautern’s training ground, situated in the shadows of their Fritz-Walter Stadium, on 12 July (1.30pm local).
As we only expect to be allocated around 200 tickets for the Kaiserslautern fixture, we strongly advise supporters to avoid making concrete plans based on attending that match until we’re able to share ticketing details, which will follow ASAP.
We’re also in the process of arranging a third friendly towards the end of our camp, which concludes on Wednesday 16 July.
Darmstadt and Kaiserslautern are cities in south-western Germany, with Darmstadt situated south of Frankfurt and Kaiserslautern nestled near the Palatinate Forest to the west."
https://www.nottscountyfc.co.uk/news/2025/june/10/friendly--sv-darmstadt--a-/