He believed allowing Edward to escape after devastating French territory carried serious political costs.
He adapted some tactics after Crécy.
He stayed with his men.
His failure lay partly in coordinating a large army through restrictive terrain and partly in recognizing the moment when continuing the battle became more dangerous than breaking contact.
That is enough criticism.
There is no need to reduce him to a fool.
Strong opponents make great victories more meaningful.
The Decision Point
Return to the middle of the battle.
The prince has been defending for hours.
The French have attacked repeatedly.
The ground is crowded with signs of exhaustion.
Men are calling across formations.
Some French banners move backward.
Others remain.
King John's force is still approaching.
Edward has only imperfect information.
He cannot see the whole battlefield.
Messengers bring fragments.
A commander near one hedge reports movement.
Another sees French troops leaving.
Archers say ammunition is being spent.
Men-at-arms are tired.
The defensive line still holds.
Every instinct of survival says:
Stay.
The hedge protected you.
The archers protected you.
The narrow approach protected you.
Do not throw away the advantage.
Then Edward sees the larger pattern.
The French divisions are no longer supporting one another.
The men withdrawing are creating space.
John's final force may soon be isolated.
If Edward waits, the French may understand the same thing and repair it.
If he moves now, perhaps they will not have time.
That is the split between defense and victory.
He chooses movement.
Orders Travel
The Captal de Buch prepares mounted troops.
Men who expected another French assault now hear that they will advance.
Some archers reposition.
Men-at-arms tighten formation.
The army cannot know the full plan.
Most soldiers never do.
A man knows the banner near him.
The commander ahead.
The order.
Forward.
The first steps must have felt strange.
Hours of receiving pressure create habits.
Now those habits reverse.
The French are no longer coming through the hedge toward them.
They are moving toward the French.
The battlefield becomes psychologically new before it becomes physically different.
The French See It Too
An enemy that was supposed to be exhausted is advancing.
That information matters.
What does it mean?
Have more English troops arrived?
Are the withdrawing French divisions gone completely?
Is the king isolated?
Has someone attacked the rear?
The soldiers do not have time for careful answers.
The pressure arrives first.
That is how morale changes.
Not through one shouted sentence.
Through hundreds of men asking the same unanswered question.
Then Mounted Troops Appear Where They Should Not Be
The flank.
The rear.
A road thought safe.
The exact geography matters less to the frightened soldier than the sight itself.
Enemy cavalry behind us.
The phrase is enough.
A man turns to look.
The line in front loses pressure.
Another begins stepping backward.
Officers shout.
Some obey.
Others move.
The difference between organized withdrawal and flight begins disappearing.
Edward's front pushes harder.
The smaller army is now imposing decisions on the larger one.
John's Division Closes Around the King
The royal banner remains.
Men who refuse to run gather there.
This is courage.
It is also contraction.
The king's army is becoming a bodyguard.
Once that happens, the strategic battle is already nearly lost.
A bodyguard can save a man.
It cannot recover a battlefield.
The men around John fight.
Philip stays near his father.