Guadal Canal is a strategy war game, one of many put out by Ark Royal Games (war games were their specialty). Featuring lo-res graphics to represent terrain and playing pieces, it featured a playing board that filled the width of the screen, and was several screens high. Other than that, I do not know too much about the game.
Title: Guadal Canal
Author: Phil Keeler
Publisher: Ark Royal Games
Released: 1983
Requires: Color Computer 1,2,3, 16K RAM tape, 32K RAM disk.