The first sign came without sound.
Not cannon fire. Not musket volleys.
Movement.
A runner from the western observation post stumbled into Isaiah's forward command just after midnight, breath ragged, face pale from cold and urgency.
"Sir—river side—movement along the interior road. Formations… not patrols."
Isaiah was already on his feet.
"How many?"
"Hard to say. Columns. No torches. Engineers with them."
That was enough.
They weren't repositioning.
They were leaving.
Within minutes, Isaiah stood atop the captured inner works, glass pressed to his eye. The fog that had concealed the American advance earlier now worked in the British favor. Shapes moved through the murk beyond the city edge—dark lines slipping toward the northern river approach.
A breakout.
If even half the garrison escaped north, they could regroup with relief forces and return within days—turning the siege into a trap for the Americans now stretched along the breach.
Howard's camp still slept behind the ridge.
Frasier's pickets hadn't reported anything.
Isaiah lowered the glass.
"Sound no alarms," he ordered.
Baird looked at him sharply. "Sir?"
"If they know we've seen them, they'll scatter."
And scattered forces were harder to kill.
His brigade was awake within minutes—quietly, efficiently.
Companies moved from trench to secondary line without drums or shouted commands. Artillery crews rotated their lighter guns toward the northern road, wheels wrapped in cloth to muffle movement. Infantry slipped into pre-dug fallback pits along the shallow rise that overlooked the breakout route.
Isaiah had prepared them for this the moment the inner ring fell.
Because no trapped army waited to be starved if escape remained possible.
The British column emerged from the fog in silence.
No banners. No cadence.
Just men moving quickly over frozen ground toward the river crossing beyond the western rise. Officers kept them tight, bayonets lowered—not for attack, but for speed through resistance if needed.
They expected to meet scattered pickets.
They found nothing.
Until they reached the slope.
"Now," Isaiah said.
The first volley came from the left flank.
Muskets cracked from concealed pits along the tree line, dropping the lead company mid-stride. Before the column could react, the right flank opened as well—fire pouring in from positions they hadn't seen through the fog.
The center stalled instantly, formations bunching as rear ranks collided with those trying to fall back.
Then the guns fired.
Canister tore through the compressed mass at less than a hundred yards. The effect was immediate—men falling in clusters, officers shouting conflicting orders as units tried to deploy under crossfire they hadn't anticipated.
"They're forming line!" Hale called.
Isaiah nodded once. "Reserve forward."
His third company rose from behind the reverse incline and fired downhill into the right flank of the British column—cutting off the only viable retreat path back toward the city.
Now they were trapped between fire and fog.
Return volleys came—but wild.
British officers tried to establish order, to push through the slope toward the river anyway. A few companies surged forward under sheer momentum, only to meet fresh American lines stepping into place behind the initial pits.
Isaiah's brigade didn't pursue.
They compressed.
Layer by layer, fallback positions absorbed the breakout attempt—each line drawing the column deeper into overlapping arcs of fire.
Within minutes, cohesion was gone.
Some British units tried to charge outright, breaking into the American line with bayonets fixed. Fighting turned close and violent along the shallow trench—rifle butts, steel, men slipping on blood-slick snow.
Isaiah moved along the rear of the line, voice steady.
"Hold the trench. No pursuit beyond the marker. Maintain formation."
His men listened.
Even when others wouldn't have.
Howard's reinforcements arrived too late to matter—his advance companies forming along the ridge as the last organized resistance collapsed below.
The fog began to thin.
What remained of the breakout force dropped weapons or fled in scattered groups back toward the city walls. A few made it to the riverbank before being driven into the ice by skirmishers closing from the flank.
By the time the firing stopped, the ground along the slope was littered with abandoned packs and broken formations.
No column escaped.
Howard rode down shortly after, staring at the field in silence.
"They tried to break out," he said finally.
Isaiah nodded.
"And you anticipated it."
"Yes, sir."
Howard's jaw worked—but no reprimand came.
Because the siege still held.
Behind them, Montreal remained contained. Ahead, the British garrison had lost its only clean chance at withdrawal.
Now they would have to fight for the city itself.
And this time—
They would have nowhere to go.