Not between AH and Russia.
eg Conrad "if the Russians do not touch us, we need not touch them either".
July 23, 1914 Serbia begins Mobilization after receiving the A-H Ultimatum
July 24, A-H informs France, Russia, and Britain of Serbian ultimatum at 9 AM, Churchill sends Fleet advisory notice of crisis, but not a full alert
July 25 A-H cut diplomatic ties, declares martial law and begins partial Mobilization, German Fleet ordered to return to base, Tsar studies Mobilization options
July 26, Serbia Mobilizes, A-H full Mobilization on Russian Border. French Fleet readies.
July 27, units in Morocco ordered to France, Bethmann-Hollweg rejects idea of Four Power conference
July 28, A-H declares War on Serbia, Churchill order Fleet to Scapa Flow, Tsar and Kaiser exchange telegrams. French Army advances to frontier
July 29, Russians General Mobilization order signed by the Tsar, they did not have a usable partial plan for Mobilization since 1904, but Partial Mobilization Orders were Telegraphed out to Moscow, Kazan, Kiev and Odessa, plus Fleet in Black Sea. More telegrams between Tsar and Kaiser, with German warnings.
July 30, Moltke presses for general mobilization. French Army withdraws 6 miles along entire border with Belgium, Luxembourg, and Germany. Evening of July 30, Reacting to the Austrian Navy bombarding Belgrade, Russia posts General mobilization orders for its troops and Fleet to begin on July 31
July 31, Germany demands that Russia stop Mobilization within 24 hours and declares martial law, and closes Border with France and Belgium. Belgium orders General Mobilization, as does A-H with ordering General Mobilization for men up to 50 years old. Russian Reserves are called up.
August 1, UK orders the Fleet to mobilize. France begin full mobilization to begin August 2nd, with French Order posted at 3:40pm on the 1st.
Germany order Full Mobilization at 5PM, declares war on Russia.
August 2, Russia declares War on Germany, Russian patrols advance into German territory, Germany occupies Luxembourg, German ultimatum to Belgian Government at 8 PM.