HistoryData
Historical ConflictMount Holly

Battle of Iron Works Hill

The skirmish at Mount Holly diverted Hessian forces under von Donop, enabling Washington's surprise crossing of the Delaware and victory at Trenton.

Duration & Scope

1776 ongoing

< 1 year

Key Facts

Dates
December 22–23, 1776
American force size
600 colonial militia
Hessian/British force size
2,000 troops
American commander
Colonel Samuel Griffin
Hessian commander
Carl von Donop

Strategic Narrative Overview

Over December 22 and 23, 1776, American militia engaged von Donop's superior force in a series of minor skirmishes around Iron Works Hill. Though outmatched, Griffin's troops contested the position long enough to occupy von Donop's attention. The Americans were ultimately driven from their positions, but the engagement kept von Donop fully occupied in Mount Holly and away from his base at Bordentown.

01 / The Origins

In late December 1776, during the American Revolutionary War, British and Hessian forces occupied much of New Jersey. Colonel Samuel Griffin led a small American force of roughly 600 colonial militia toward Mount Holly, New Jersey, drawing the attention of Hessian Colonel Carl von Donop, who commanded approximately 2,000 British and Hessian regulars stationed in the region around Bordentown.

03 / The Outcome

Although the Americans were forced to withdraw, the battle had strategic consequences beyond its tactical result. Von Donop's absence from Bordentown left Johann Rall's Hessian brigade in Trenton without potential reinforcement. On the night of December 25–26, Washington crossed the Delaware and routed Rall's force at Trenton, a turning point that revived American morale and the Revolutionary cause.

Belligerents & Mobilization Analysis

Side A

1 belligerent

Hessian and British regulars
Peak Mobilized Forces~2K
Forces vs Casualties ratio
0Mobilized
Key Commanders

Carl von Donop.

Side B

1 belligerent

American colonial militia
Peak Mobilized Forces600
Forces vs Casualties ratio
0Mobilized
Key Commanders

Samuel Griffin.

Outcome
Hessian/British tactical victory; Americans forced from positions, but von Donop diverted from Bordentown, enabling Washington's victory at Trenton.

Kinetic Engagement Axis

Major engagements timeline (1776–present)Timeline of major military engagements plotted chronologically.1776present1776Battle of Iron W…Allied

Scroll horizontally to view full axis. Events plotted relatively.

Side A victorySide B victoryInconclusiveDecisive / turning point

Location

Map of Mount Holly, United StatesMap of Mount Holly, United StatesMount Holly, United States