<a href="https://en.wikipedia.org/wiki/Battle_of_Surabaya" id="mwug" rel="mw:WikiLink" title="Battle of Surabaya">Heavy fighting</a> in <a href="https://en.wikipedia.org/wiki/Surabaya" id="mwuw" rel="mw:WikiLink" title="Surabaya">Surabaya</a> between <a href="https://en.wikipedia.org/wiki/Indonesia" id="mwvA" rel="mw:WikiLink" title="Indonesia">Indonesian</a> nationalists and returning colonialists after World War II, today celebrated as <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Heroes_Day_(Indonesia)" id="mwvQ" rel="mw:WikiLink" title="Heroes Day (Indonesia)">Heroes' Day (Hari Pahlawan)</a>.