MADRID—Spain deployed its military to the Moroccan border on Tuesday as thousands of migrants jumped fences or swam onto European soil for the second day in a row after Rabat loosened border controls amid a deepening diplomatic spat. Overwhelmed soldiers separated the adults from the young and carried children in their arms while Red Cross workers helped an endless trickle of migrants who were emerging from the water shivering and exhausted. One unconscious woman laid on the sand before she was carried away on a stretcher. The sudden influx of migrants has fueled the diplomatic spat between Rabat and Madrid over the disputed Western Sahara region and created a humanitarian crisis for Ceuta, the Spanish city of 85,000 in North Africa on the Mediterranean Sea, separated from Morocco by a double-wide, 10-meter (32-feet) fence. Amina Farkani, a 31-year-old Moroccan woman who commuted to jobs in Ceuta for 18 years until …