Cressingham – a treasury administrator, made a more credible number when he wrote a letter to the king in July from Roxburgh and said he had gathered 300 knights and 10,000 infantry. At the time of the Battle of Stirling Bridge the King of England was in Flanders with his strongest army, the document showed that he also had only 822 paid cavalry and 8,500 infantrymen, which seemed strange if Cressinghanl wanted again. there are more infantry soldiers than the king now fighting the French in Flanders. Woodstocks 50th anniversary Hippie Car Shirt. The remaining records show that the infantry force summoned for the Caerlaverock campaign is only 1300 people, suggesting that only about half of the infantry was actually summoned last week at Caerlaverock Castle. early July. The British infantry force that month was about 9,093 with a pioneering force of about 5,400 British and Welsh soldiers.