Siege of Strasbourg
The Siege of Strasbourg took place during the Franco-Prussian War , and resulted in the French surrender of the fortress on 28 September 1870 . 
<triplet> Siege of Strasbourg <subj> Franco-Prussian War <obj> part of <subj> 28 September 1870 <obj> end time <triplet> Franco-Prussian War <subj> French <obj> participant