| Result | American defensive success | American victory |
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| Tactical outcome | American delaying actions consumed daylight, and Washington’s main line south of Assunpink Creek repelled repeated Crown attempts to force the bridge and nearby crossings. The Continental army held its position through the evening. | A small rebel force associated with Ethan Allen, Benedict Arnold and the Green Mountain Boys surprised the lightly held British post and took Fort Ticonderoga with little fighting. |
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| Strategic effect | The defense prevented Cornwallis from crushing Washington at Trenton, but remaining in place invited a renewed attack. Washington used the night to disengage and march around the British position toward Princeton, turning a defensive survival into another offensive opportunity. | The capture opened a strategically important Lake Champlain position to the revolutionaries and gave them access to artillery and stores; guns from the northern forts later contributed to the artillery concentration around Boston. |
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| Terrain problem | Assunpink Creek formed a natural barrier south of Trenton. The bridge concentrated movement into a narrow crossing while the creek and nearby fords complicated a frontal assault. Roads north of town also gave Hand’s delaying force successive places to contest the British advance. | Ticonderoga sat at a narrows controlling movement between Lake George and Lake Champlain. The strategic value of the site was far larger than the number of troops inside the fort on May 10. |
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| Intelligence problem | Both commanders knew the other army was close, but the crucial information problem came after dark. Cornwallis expected to renew the battle in the morning. Washington’s council instead considered escape and maneuver, using campfires and a concealed march to prevent the British from recognizing the movement in time. | The attackers exploited surprise and local knowledge. The British garrison did not face a formal siege; the action turned on reaching and entering the fort before resistance could be organized. |
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| Turning point | The battlefield turning point was the failure of Crown assaults to force the Assunpink line before darkness. The operational turning point came afterward, when Washington rejected a static overnight defense and chose the road to Princeton. | The decisive moment was penetration of the post itself. Once the small garrison was surprised inside a fort not prepared for a full defense, the contest was effectively settled. |
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| Documented OOB records | 7 | 5 |
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| Tactical phases | 5 | 5 |
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| Command decisions analyzed | 1 | 1 |
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| Primary-source records | 1 | 1 |
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| Modern/historical geography anchors | 2 | 2 |
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