large numbers of Vietnamese troops who had served in France were sacked
...that in the wake of the Yen Bai mutiny of Vietnamese soldiers in the French colonial army, large numbers of Vietnamese troops who had served in France were sacked because it was felt that overseas travel made them more inclined to rebel?
...that in the wake of the <a class="mw-redirect" href="./Yen_Bai_mutiny" id="mwFug" rel="mw:WikiLink" title="Yen Bai mutiny">Yen Bai mutiny</a> of <a href="./Vietnamese_people" id="mwFuk" rel="mw:WikiLink" title="Vietnamese people">Vietnamese soldiers</a> in the <a class="mw-redirect" href="./French_Colonial_Forces" id="mwFuo" rel="mw:WikiLink" title="French Colonial Forces">French colonial army</a>, <b id="mwFus"><a class="mw-redirect" href="./Military_reforms_resulting_from_the_Yen_Bai_mutiny" id="mwFuw" rel="mw:WikiLink" title="Military reforms resulting from the Yen Bai mutiny">large numbers of Vietnamese troops who had served in France were sacked</a></b> because it was felt that overseas travel made them more inclined to rebel?