Activated 5 Mar 1941  •  Entered Combat 1 Sep 1944  •  Days of Combat 139  •  Casualties 2,426


Commanding Generals

Maj. Gen. Samuel Lawton   (Mar 41 - May 42) 
Maj. Gen. Frank C. Mahin   (May 42 - Jul 42) 
Maj. Gen. John Millikin   (Aug 42 - Sep 43) 
Maj. Gen. Percy Clarkson   (Oct 43 - Nov 45) 



New Guinea (24 Jan 43 - 31 Dec 44)

Luzon (15 Dec 44 - 4 Jul 45)



The 33d Infantry Division arrived in Hawaii on 12 July 1943. While guarding installations, it received training in jungle warfare. On 11 May 1944, it arrived in New Guinea where it received additional training. The 123d Infantry Regiment arrived at Maffin Bay, 1 September, to provide perimeter defense by aggressive patrolling for Wakde Airdrome and the Toem-Sarmi sector. The 123d was relieved on 26 January 1945. Elements of the 33d arrived at Morotai, 18 December 1944. Landings were made on the west coast of the island, 22 December, without opposition and defensive perimeters were established. Aggressive patrols encountered scattered resistance. The 33d landed at Lingayen Gulf, Luzon, 10 February 1945, and relieved the 43d Infantry Division in the Damortis-RosarioPozorrubio area, 13-15 February. The Division drove into the Caraballo Mountains, 19 February, toward its objective, Baguio, the summer capital of the Philippines and the headquarters of General Yamashita. Fighting against a fanatical enemy entrenched in the hills, the 33d took Aringay, 7 March, Mount Calugong, 8 April, and Mount Mirador, 25 April. Baguio and Camp John Hay fell on 26 April, under the concerted attack of the 33d and the 37th Divisions. Manuel Roxas, later President of the Philippines, was freed during the capture of Baguio. After mopping up isolated pockets of resistance, the Division broke up the last organized resistance of the enemy by capturing the San Nicholas-Tebbo-Itogon route, 12 May. All elements went to rest and rehabilitation areas on 30 June 1945. The Division landed on Honshu Island, Japan, 25 September, and performed occupation duties until inactivated.

Notes and sources:
Date Activated is the date the division was activated or inducted into federal service (national guard units).
Casualties are number of killed, wounded in action, captured, and missing.
The dates after the campaign name are the dates of the campaign not of the division.
The Army Almanac: A Book of Facts Concerning the Army of the United States; , U.S. Government Printing Office. Army Battle Casualties and Nonbattle Deaths in World War II, Final Report, 1 December 1941 - 31 December 1946. US Army Center of Military History at http://www.history.army.mil/ Various divisional histories