The Spanish attack on Portugal started on the early morning of 20th May, and focused on the Portuguese border region that included the main Garrison Town and Fortifications of Elvas and the smaller fortified towns of Campo Maior, Olivença ("Olivenza" in Spanish) and Juromenha. The main force of the Spanish Army advanced to Elvas, while two divisions advanced to Campo Maior and another division advanced to Olivença and Juromenha. Without having their fortifications complete and defended only by a few hundred soldiers, most of the militias, Olivença and nearby Juromenha quickly surrendered to the Spanish forces. The Portuguese garrison of Campo Maior - under the command of Lieutenant-Colonel Dias Azevedo - resisted the assault for 17 days, forcing the Spanish to maintain two entire divisions in its siege. The main Spanish force - under the direct command of Godoy - tried to assault Elvas but was easily repelled by the strong Portuguese garrison commanded by General Francisco de Noronha. The Spanish troops then withdrew to a safe distance from the fortress, with Godoy not daring to attack it again until the end of the war. The war entered in a stalemate, with most of the Spanish forces held in sieges of fortresses and the rest not being able to face the blockade made by the main core of the Portuguese Army, in order to advance further inside Portugal. Despite this, Godoy picked oranges from the outside of Elvas and sent them to the Queen of Spain with the message that he would proceed to Lisbon. Thus, the conflict became known as the "War of the Oranges".