Japanese Forces

MO Operation
    VADM Inoue Shigeyoshi (in Kashima, at Rabaul)

MO Strike Force
    VADM Takagi Takeo

Carrier Division 5
    RADM Hara Chuichi

Shokaku - CAPT Joshima Takaji
Shokaku Air Group
    LT CDR Takahashi Kakuichi - 1 D3A1
18 A6M2 - LT Hoashi Takumi
20 D3A1 - LT Yamaguchi Masao
19 B5N2 - LT Ichihara Tatsuo
3 A6M2 - cargo for Tainan Air Group (at Rabaul)

Zuikaku - CAPT Yokokawa Ichibei
Zuikaku Air Group - LT CDR Shimazaki Shigekazu - 1 B5N2
20 A6M2 - LT Okajima Kiyohuma
22 D3A1 - LT Ema Tamatsu
22 B5N2 - LT Subota Yoshiaki
5 A6M2 - cargo for Tainan Air Group (at Rabaul)

Cruiser Division 5
    VADM Takagi
Myoko
Haguro

Destroyer Division 27
Arike
Yugure
Shigure
Shiratsuyu

Destroyer Division 8
Ushio
Akebono
 

Port Moresby Invasion Force

Attack Force
    RADM Kajioka Sadamichi
Yubari
Oite
Asanagi
Mitsuki
Mochizuki
Yayoi
1 Patrol Boat
1 Auxiliary Craft

Transport Force
    RADM Abe Koso
Tsugaru (CM)
12 Transports
Various Auxiliary Craft

MO Main Force
    RADM Goto Arimoto

Close Support Force
    RADM Goto

Shoho - CAPT Izawa Ishinosuke
Shoho Air Group - LT Notomi Kenjiro
8 A6M2, 4 A5M2 - LT Notomi
6 B5N2 - LT Nakamoto Michitaro

Sazanami

Support Force, Main Body
    RADM Goto
Aoba (F)
Kako
Kinugasa
Furutaka

Close Cover Force
    RADM Marumo Kuninori
Tenryu (F)
Tatsuta
Kanikawa Maru (XAV)
3 gunboats

Tulagi Invasion Force
    RADM Shima Kiyohide
Kikuzuki
Yuzuki
Okinoshima
Koei Maru
1 Transport
Various Auxiliary Craft

Task Force 17
    RADM Frank J. Fletcher

Task Group 17.5 (Carrier Group)
    RADM Aubrey W. Fitch

Lexington - CAPT Frederick Sherman
Lexington Air Group - CDR William B. Ault   - 1 SBD-3
VF-2: 21 F4F-3/-3A   - LT CDR Paul H. Ramsey
VB-2: 18 SBD-2/-3 - LT CDR William L. Hamilton
VS-2: 17 SBD-3   - LT CDR Robert E. Dixon
VT-2: 13 TBD-1 - LT CDR James H. Brett, Jr.

Yorktown - CAPT Elliott Buckmaster
Yorktown Air Group - LT CDR Oscar Pederson
VF-42: 18 F4F-3 - LT CDR Charles R. Fenton
VB-5: 18 SBD-3 - LT Wallace C. Short
VS-5: 17 SBD-3 - LT CDR William O. Burch, Jr.
VT-5: 13 TBD-1 - LT CDR Joe Taylor

Morris - CDR Harry B. Jarrett
Anderson - LT CDR John K.B. Ginder
Hammann - CDR Arnold E. True
Russell - LT CDR Glenn R. Hartwig
Task Group 17.2 (Attack Group) - RADM Thomas C. Kincaid
Minneapolis   - CAPT Frank J. Lowry
New Orleans - CAPT Howard H. Good
Astoria - CAPT Francis W. Scanland
Chester - CAPT Thomas M. Shock
Portland - CAPT Benjamin Perleman
Phelps - LT CDR Edward L. Beck
Dewey - LT CDR Charles Chillingworth, Jr.
Farragut - CDR George P. Hunter
Aylwin - LT CDR George Phelan
Monaghan - LT CDR William P. Burford
 

Task Group 17.3 (Support Group)
    RADM J.G. Crace, RN

Australia - CAPT H.B. Farncomb, RAN
Hobart - CAPT H.L. Howden, RAN
Chicago - CDR Howard D. Bode
Perkins - LT CDR Walter C. Ford
Walke - LT CDR Thomas E. Fraser

Task Group 17.6 (Fleet Train)
    Captain John S. Phillips

Neosho - Captain Phillips
Tippecanoe - CDR Atherton Macondray
Sims - LT CDR Willford M. Hyman
Worden - LT CDR William G. Pogue

Task Group 17.9 (Search Group)
    CDR George H. DeBaun (in Noumea)
Tangier - CDR DeBaun
12 PBY

Sources:
1. Battle Report - Pacific War: Middle Phase by Captain Walter Karig, USNR; Rhinehart and Company, 1947
2. Destined for Glory by Thomas Wildenberg; USNI Press, 1998
3. The First Team - Naval Air Combat from Pearl Harbor to Midway by John Lundstrom; USNI Press, 1984
4. The First South Pacific Campaign by John Lundstrom USNI Press, 1976
5. Battle History of the Imperial Japanese Fleet by Paul S. Dull; USNI Press 1978
6. United States Strategic Bombing Survey, “Campaigns of the Pacific War,” Naval Analysis Division, GPO, 1946.