Tangier expedition, and opened alarm at the prospect of a new war between Portugal and Castile. The quarrel was still going strong through spring 1437. On April 30, Pope Eugenius IV issued the bull Dominatur Dominus revoking some portions of the prior September's Tangier bull, which might be interpreted as implicating the Castilian right of conquest. As late as May, Edward of Portugal was threatening to cancel the Tangier expedition and take arms against Castile to defend some controversial border parishes. However, the diplomatic quarrel calmed down and faded by early Summer 1437. Departure In late summer 1437, after a year of preparation, the Portuguese expeditionary force was finally ready. The levies had been disappointing. Pina reports only some 6,000 Portuguese soldiers in all (3,000 knights, 2,000 infantry, 1,000 archers) – that is, less than half of the 14,000 force anticipated. Álvares reports higher numbers – 7,000 out of Lisbon, plus additions from Porto and Ceuta. Nonetheless, the turnout was much lower than expected, in good part due on the unpopularity of the expedition, but there were problems with contracting transports abroad. The transport ships that showed up (mostly English and Basque) were hardly enough to ferry even this reduced force. It is reported that some of the levies (as much as a quarter) had to be left behind in Lisbon. Nonetheless, it was decided to press forward, assuming the remainder would be eventually ferried when the missing transports arrived. By King Edward's order, Prince Henry the Navigator was assigned overall command of the expedition, and was to sail with the troops from Lisbon. His experienced nephew Ferdinand (Count of Arraiolos) (who earlier pronounced himself against the expedition) was appointed constable of the nobles and sent to Porto to organize the embarcation of troops from northern Portugal. Among the other nobles participating in the enterprise were Henry's brother Ferdinand the Holy Prince (naturally), the marshal of the kingdom Vasco Fernandes Coutinho (future Count of Marialva) and the admiral of the sail fleet (capitão-mor da frota) Álvaro Vaz de Almada (future Count of Avranches). The prelate D. Álvaro de Abreu (Bishop of Evora) would go as papal legate. The knights of Henry's Order of Christ and Ferdinand's Order of Aviz were ordered to follow their masters to North Africa. D. Fernando de Castro, governor of Henry's household, led the Henry's household knights and squires, while his relative and namesake D. Fernando