Even today, the evaluation of forces is controversial. The classic French historiography often refers to Coalition troops three times more numerous than those of the King of France. Philippe Contamine is not of this opinion: "On the face of it, his opponents did not have a clear numerical superiority". It is said by William the Breton, chaplain to Philip at the Battle of Bouvines, that the lines of soldiers stood in line in a space of 40,000 steps , which leaves very little clearance and predisposes to hand-to-hand fighting . William the Breton also says in his column that "the two lines of combatants were separated by a pretty small space". Philip Augustus had then launched an appeal to the municipalities in northern France, in order to obtain their support. 16 of the 39 municipalities of the royal demesne answered the call to arms. Amiens 250, Arras 1000, Beauvais 500, Compiegne 200, Corbie 200, Bruyeres 120, Cerny and Crepy-en-Laonnais 80, Crandelain 40, Hesdin 80, Montreuil-sur-Mer 150, Noyon 150, Roye 100, Soissoins 160, Vailly 50, Total = 3,160 foot-soldiers. The rest of the infantry being composed of mercenaries. There were 1,980 infantrymen in the other communes of the royal demesne, but it is not known if they participated in the battle. In total, the royal army had 7,000 foot-soldiers, mounted sergeants and knights at the battle. The royal army was divided into three parts:

Question: Who sent more foot-soldiers, Amiens or Arras?
Answer: Amiens 250

Question: How many municipalities did not answer the call to arms?
Answer: 23

Question: How many municipalities of the royal demesne did not answer the call to arms?
Answer: 23

Question: Which municipality brought the most soldiers?
Answer: Arras

Question: Which municipality offered the least number of soldiers?
Answer: Crandelain

Question: How many municipalities of the royal demesne didn't answer the call to arms?
Answer: 23

Question: How many municipalities of the royal demesne didn't answer the call to arms?
Answer: 23

Question: How many more Arras than Amiens answered the call to arms?
Answer: 750

Question: How many more Beauvais than Amiens answered the call to arms?
Answer: 250

Question: How many more Arras than Compiegne answered the call to arms?
Answer: 800

Question: How many muncipalities did not send troops?
Answer: 23

Question: Which municipality send the most troops?
Answer: Arras

Question: Which municipality send the smallest number of troops?
Answer: Crandelain

Question: Which muncipality sent less troops, Vailly or Noyon?
Answer: Vailly

Question: How many of the municipalities of the royal demesne did not answer the call to arms?
Answer: 23

Question: Which municipalities deployed less than 100 soldiers?
Answer: Cerny and Crepy-en-Laonnais

Question: Which municipalities deployed more soldiers than Corbie?
Answer: Amiens

Question: Which municipalities deployed more soldiers than Creandelain but less than Bruyeres?
Answer: Cerny and Crepy-en-Laonnais

Question: How many more soldiers were deployed in Soissoins than in Noyon?
Answer: 10

Question: Which municipalities deployed 200 soldiers?
Answer: Compiegne

Question: How many municipalities each deployed less than 500 soldiers?
Answer: 12