Japanese Forces
"MO" OPERATION       VAdm Inoue Shigeyoshi
		     (in Kashima, at Rabaul)  
"MO" STRIKE FORCE	VAdm Takagi
Zuikaku     CV  64 a/c	RAdm Hara Chuichi
Shokaku     CV  57 a/c	CarDiv5
Myoko 	    CA	CruDiv5
Haguro	    CA
Arike	    DD 	DesDiv 27
Yugure	    DD
Shigure	    DD
Shiratsuyu  DD
Ushio	    DD	DesDiv 8
Akebono	    DD
Toho Maru   AO	Oiler
"MO" MAIN FORCE		RAdm Goto Arimoto
CLOSE SUPPORT Force     RAdm Goto
Shoho   	CVL 18 a/c
Sazanami 	DD
SUPPORT Force, Main Body RAdm Goto
Aoba (F)	CA 
Kako		CA
Kinugasa	CA
Furutaka	CA
PORT MORESBY Invasion Force
ATTACK Force         RAdm Sadamichi Kajioka 
Yubari		CL
Oite 		DD
Asanagi 	DD
Mitsuki		DD
Mochizuki	DD
Yayoi		DD
Uziki           DD
1 Patrol Boat	PC
1 Auxiliary Craft

TRANSPORT Force      RAdm Abe Koso
Tsugaru 	CML
12 Transports 	AK/AP
3 Minesweeepers
Goyo Maru	AO
Hoyo Maru	AO
Oshima 		AR
CLOSE COVER Force    RAdm Marumo Kuninori
Tenryu (F) 	CL
Tatsuta		CL
Kanikawa Maru 	XAV seaplane tender
Nikkai Maru, Keijo Maru, Seikai Maru PG
TULAGI INVASION Force   RAdm Shima Kiyohide  
Kikuzuki	DD
Yuzuki 		DD
Okinoshima	ML  ** Sunk by S-42 May 11
Koei Maru 	ML
Azumasan Maru 	AK
2 Minesweepers; 3 MS; 2 PC
Minelayers - 2
SUBMARINES
5 I-boats; 2 RO-boats
Allied Forces
Task Force 17		     RAdm Frank J. Fletcher
                              (in Yorktown)
Task Group 17.5 (Carrier Group) RAdm Aubrey W. Fitch
Lexington  	CV-2	w/ 69 a/c
Yorktown  	CV-5 	w/ 66 a/c
Morris 		DD-417
Anderson 	DD-411
Hammann		DD-412
Russell 	DD-414
Task Group 17.2 (Attack Group) 	RAdm Thomas C. Kincaid
Minneapolis	CA-36
New Orleans	CA-32
Astoria		CA-34
Chester 	CA-27
Portland 	CA-33
Phelps  	DD-360
Dewey 		DD-349
Farragut	DD-348
Aylwin 		DD-355
Monaghan 	DD-354
Task Group 17.3 (Support Group)	RAdm J.G. Crace, RN
Australia RAN	CA
Hobart RAN 	CL
Chicago 	CA-29
Perkins 	DD-377
Walke 		DD-416
Task Group 17.6 (Fleet Train)
Neosho 		AO-23
Sims 		DD-409
Tippecanoe 	AO-21
Worden 		DD-352
Task Group 17.9 (Search Group) (in Noumea)
Tangier 	AV-8	w/12 PBY
SUBMARINES 
 S-38,  S-42,  S-44, S-47
** Sub S-42 (SS-153) torpedoes  minelayer Okinoshima May 11.