 Complete the following phrase:  The usual full dress uniform of the Chilean Army is based on twentieth-century German feldgrau uniforms; however, several units wear more colorful full dress uniforms. Cadets of the military academy Bernardo OHiggins Riquelme wear a Prussian blue uniform with Pickelhaube, based on the uniform worn by the Wilhelmine foot guard regiments. Some military units, including the Chacabuco and Rancagua regiments, wear a uniform from the War of the Pacific during parades, with kepis as headdress. The Buin regiment 2nd Army division in the Santiago Metropolitan region has reintroduced the infantry regimental uniform of the 