Guns 'n Grenades

From BoardGameGeek:

Ever wanted to play a wargame but don't have time for expensive miniatures and massive rulebooks? Well here's your solution! Guns 'n Grenades is a wargame that uses generic plastic army men as the miniatures. The rules are simple and effective, allowing you to fight on levels as small as squad vs. squad or even as big as entire armies fighting! Combat is simple, running on dice rolls and luck. -description from the publisher