Gaza conflict: Could Israeli soldiers be prosecuted for war crimes in Germany?

A Belgian non-profit is trying to prosecute Israeli soldiers, should they leave Israel, for alleged war crimes. German law would allow for this. Could Israeli soldiers on vacation in Germany be arrested?

source https://www.dw.com/en/gaza-conflict-could-israeli-soldiers-be-prosecuted-for-war-crimes-in-germany/a-71293687?maca=en-rss-en-ger-1023-rdf