 Complete the following phrase:  While retaining their grey and red Papal uniforms, the Zouaves fought the Prussians and their other German allies outside Orléans, with 15 killed or wounded between 11 and 12 October 1870, and also engaged the enemy at Patay. Expanded to two battalions totalling about 1,800 men, the new force with its experienced core of former Papal Zouaves fought with distinction at the 