Land and Airborne Assault are a set of free wargames rules that cover warfare from 1950 to the present. From the website:
Land and Airborne Assault is published in PDF format, is printer friendly and suiteable for all micro armour scales.
Land and Airborne Assault rules cover warfare from 1950 to the present day.
They include Electronics, Engineering, Artillery and Aircraft support plus Special Forces
and RPVs. The 4th edition has improved CAP air to air combat rules.
Pre-Game rules allow you to carry out a reconnaissance, flanking attack, sabotage and assassinations.
The morale reactions reflect actions troops and units would take on the modern battlefield.
Some dice rolling normally associated with modern warfare rules have been simplified making it possible to played a large game in a afternoon or evening.
Data specific to these rules for AFV armour class’s, size and speed, ATGM speed, generation and size, Aircraft size and payload and Artillery ranges is supplied on this website in the data and information section.