Aitape

(142.35E 3.14S) Aitape was a small village on the north coast of New Guinea, on the Australian half of the island. Prior to the war, it was notable only for the presence of a fairly decent anchorage, with no facilities to speak of. 

In early 1942, the village was seized by the Japanese, who built a small airstrip a few miles southeast near the coast.

Operation PERSECUTION: The Assault on Aitape

Advised by the code breakers that Hollandia and Aitape were only lightly garrisoned, MacArthur decided in March 1944 invade both locations in order to bypass the large garrisons at Hansa Bay and Wewak. PERSECUTION, the assault on Aitape, was intended to secure fighter strips to support the more important Hollandia landings. The invasion force was commanded by Brigadier General Jens A. Doe and was built around the 163 Infantry Regiment of the 41 Division. The troops landed on 22 April and the airstrip was secured by 26 April. Opposition was light, since there were not more than 1300 Japanese in the area, of whom only about 250 were combat troops. One transport was badly damaged by a Japanese torpedo bomber.

The Battle of the Driniumor River

Adachi's 18 Army, cut off by the Hollandia/Aitape landings, pushed west towards Aitape with the intention of seizing the port. The Allies were warned well in advance of Japanese intentions, and by the time the Japanese reached the Driniumor River east of Aitape, the Allied garrison had been reinforced to fifteen infantry battalions and two cavalry squadrons. Nevertheless, on 10 July 1944, the desperate Japanese troops succeeded in punching a hole in the American line. The Americans counterattacked and regained their original positions by the 18th, but Adachi then tried to flank the American line in the south, deep in the jungle. Two weeks of seesaw fighting followed before the Japanese gave up and began to retreat. The Americans launched their own attack along the coast, driving the shattered remnants of 18 Army into the jungle, where they dwindled from starvation and disease until the Japanese surrender in August 1945.

References

Costello (1981)

Morison (1953)

Spector (1985)