Schematic plan · Korean War

Battle of Nam River

22 September 1950
Korea
Victory for USA

All battles The event in the chronicle Wikipedia

A schematic plan, generated from the statistics of the CAA Database of Battles: the armies' size and width, the hours of fighting, the plan of attack and the outcome are as recorded; the ground and the positions are not.

USA (US Div, 16,400 men under unrecorded commanders) attacked North Korea (Nkor Army, 9,000 men under unrecorded commanders) in Korea. The CAA Database of Battles records 48 hours of fighting on a front of 52 km, a frontal attack against delaying action, and that USA won. Losses: USA 230 (1%), North Korea 1,640 (18%).

This plan is generated from those figures. It shows the shape of the battle the database describes: the size and width of the armies, the plan of attack and the outcome. It does not show where the units actually stood.

The armies

USA

Unit	Arm	Men
USA left wing	Infantry	3,444
USA centre	Infantry	4,592
USA right wing	Infantry	3,444
USA reserve	Infantry	2,870
USA artillery (70 guns)	Artillery	1,050
USA armour (200 tanks)	Armour	1,000
USA command	Commander	—
In this plan		16,400

North Korea

Unit	Arm	Men
North Korea left wing	Infantry	2,059
North Korea centre	Infantry	2,746
North Korea right wing	Infantry	2,059
North Korea reserve	Infantry	1,716
North Korea artillery (28 guns)	Artillery	420
North Korea command	Commander	—
In this plan		9,000

What the sources report

	USA	North Korea
Strength, this plan	16,400	9,000
Losses, this plan	230	1,640

In the CAA Database of Battles

CDB90 no. 628, “Nam River”, compiled for the US Army to study what decides battles. These are the figures a what-if engine can be calibrated against.

Fighting: 48 hours
Winner: the attacker
Weather: Dry, Temperate, Autumn, Temperate
Defender’s posture: Delaying action
Front width: 52 km (attacker), null km (defender)

Force	Strength	Losses	Horse	Guns	Plan and outcome
USAattacker	16,400	230	0	70	Penetration
North Koreadefender	9,000	1,640	0	28	Withdrew

Attacker’s advantages none recorded

CDB90 (US Army Concepts Analysis Agency, 1990), tidy edition by Jeffrey B. Arnold; data under ODC-BY 1.0.

Notes

On this reconstruction

Generated automatically from the statistics in CDB90. Frontages, depths, distances, the order of events and the terrain are schematic: they follow the recorded strengths, front widths, hours of fighting, tactical plan and outcome, not maps or accounts of the battle. The sources give no hours; the timing is conjectural.

Sources

US Army Concepts Analysis Agency; tidy edition by Jeffrey B. Arnold, CAA Database of Battles (CDB90), no. 628 · ODC-BY-1.0Strengths, losses, front widths, hours of fighting, tactics and outcome.
Wikipedia contributors, Battle of Nam River · CC-BY-SA-4.0

Facts gathered from Wikidata (CC0), Wikipedia (CC BY-SA 4.0) and Wikimedia Commons (licence per file); the plan and its text are timeastra’s own.