Warlord Games 
Bolt Action: Campaign: New Guinea [PDF ebook] 

In 1942, Japanese forces invaded the island of New Guinea and started a bitter, three-year campaign against allied Australian and American forces. Fought in dense jungles and across rugged mountaintops, the grueling fight pushed men to their very limits and forced commanders to adopt new strategies and tactics for the harsh island terrain. Filled with new rules, scenarios, and unit types, this supplement for Bolt Action provides players with all of the information they need to set their games in this unforgiving battlefield.