Royal Expedition
... that supplies were so poor during the Royal Expedition of the First Carlist War that some soldiers wore cardboard-heeled shoes?
... that supplies were so poor during the <b id="mw6g"><a href="./Royal_Expedition" id="mw6w" rel="mw:WikiLink" title="Royal Expedition">Royal Expedition</a></b> of the <a href="./First_Carlist_War" id="mw7A" rel="mw:WikiLink" title="First Carlist War">First Carlist War</a> that some soldiers wore cardboard-heeled shoes?