<a href="https://en.wikipedia.org/wiki/Battle_of_Callinicum" id="mwIA" rel="mw:WikiLink" title="Battle of Callinicum">Battle of Callinicum</a>: A <a href="https://en.wikipedia.org/wiki/Byzantine_Empire" id="mwIQ" rel="mw:WikiLink" title="Byzantine Empire">Byzantine</a> army under <a href="https://en.wikipedia.org/wiki/Belisarius" id="mwIg" rel="mw:WikiLink" title="Belisarius">Belisarius</a> is defeated by the <a href="https://en.wikipedia.org/wiki/Sasanian_Empire" id="mwIw" rel="mw:WikiLink" title="Sasanian Empire">Persians</a> at <a href="https://en.wikipedia.org/wiki/Raqqa" id="mwJA" rel="mw:WikiLink" title="Raqqa">Raqqa</a> (northern <a href="https://en.wikipedia.org/wiki/Syria" id="mwJQ" rel="mw:WikiLink" title="Syria">Syria</a>).<sup about="#mwt24" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-2"}}' id="cite_ref-2" rel="dc:references" typeof="mw:Extension/ref"><a href="./April_19#cite_note-2" id="mwJg" style="counter-reset: mw-Ref 2;"><span class="mw-reflink-text" id="mwJw">[2]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-2"><cite about="#mwt21" class="citation book cs1" id="CITEREFIrfan_ShahidIrfan_Shahîd1995">Irfan Shahid; Irfan Shahîd (1995). <a class="external text" href="https://books.google.com/books?id=BEvEV9OVzacC&amp;pg=PA134" id="mwBVs" rel="mw:ExtLink nofollow"><i id="mwBVw">Byzantium and the Arabs in the Sixth Century</i></a>. Dumbarton Oaks. p.<span id="mwBV0" typeof="mw:Entity"> </span>134. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwBV4" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwBV8" typeof="mw:Entity"> </span><a href="./Special:BookSources/978-0-88402-214-5" id="mwBWA" rel="mw:WikiLink" title="Special:BookSources/978-0-88402-214-5"><bdi id="mwBWE">978-0-88402-214-5</bdi></a>.</cite><span about="#mwt21" class="Z3988" id="mwBWI" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Byzantium+and+the+Arabs+in+the+Sixth+Century&amp;rft.pages=134&amp;rft.pub=Dumbarton+Oaks&amp;rft.date=1995&amp;rft.isbn=978-0-88402-214-5&amp;rft.au=Irfan+Shahid&amp;rft.au=Irfan+Shah%C3%AEd&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DBEvEV9OVzacC%26pg%3DPA134&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AApril+19"></span></span>