Junior General offers a set of free wargames rules for refighting the Vietnam War Battle of la Drang.
vietnam
One Brain Cell Vietnam Rules
One Brain Cell Vietnam Rules are a set of free wargames rules for games set in the Vietnam War. They are designed to be a simple, beer-and-pretzels set.
Police Action 6mm Vietnam Rules
Police Action is a set of free wargames rules for 6mm Vietnam games.
Air Wars Rules
Air Wars is a set of free wargames rules for air combat in the Vietnam War era.
Vietnam Skirmish Rules
From The Black Dog of Doom comes a set of Vietnam Skirmish Rules. The author writes:
This is a set of wargame rules for playing a middling size skirmish set in the American/Vietnam war. The rules were written for use with 20mm metal minis and have been used in that role a number of times.
As well as the figures and terrain, you will also need to supply some standard dice, a measuring stick, lots of tiddley winks and some crunched up balls of paper!
The rules feature the use of supressing fire which will pin all but the bravest of warriors. In game terms, supressing fire reduces the ability of the supressed to interfere with your plans.
Also included are some rules for handling vehicles and artillery fire, although these features are not expected be the focus of the game. In play each player will easily be able to handle 20-30 figures.